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Ryokan

Yoro Keikoku Onsenkyo Onsen Ryokan Kawanoya

Otaki Town, Chiba, Japan
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An inn surrounded by the natural beauty of the Yoro Valley. Enjoy our set meals and have a relaxing time in our cave bath.

Guest review score

Excellent
Reviews: 34
4.4

Access

Yoro Keikoku Station
7 min drive
Kazusa-Nakano Station
12 min drive
Kazusa-Okubo Station
13 min drive

Property facilities

  • Parking lot
  • Spa / Beauty salon
  • Banquet hall
  • Grand bath (hot spring)
  • Pick-up and drop-off
  • Home delivery

Explore our rooms and plans

Price (low to high)
2 room types
10 tatami mats
No smoking
Mountain view
Max 5 adults / 4 children
Room facilities
  • Internet available in room
  • Toilet available, no bath
  • Bidet toilet
  • * Indoor bath 1 (240-180)
    Only 3 rooms left!
    Free cancellation until Nov 17
    Meal
    Breakfast
    Dinner
    Rakuten Special OfferBonus Discount
    Price for:
    1 night
     | 
     | 
    $244.18
    Taxes & fees incl.

    Coupon

    *The discount is calculated based on the original price.
    Plan details

    ★Spectacular View!Enjoy the seasonal beauty of Yoro Valley★ A plan to savor local cuisine★ ☆ Meals served in private rooms [Breakfast] [Dinner]

    Free cancellation until 11/17/2025 11:59 p.m.(JST)

    Coupon

    *The discount is calculated based on the original price.

    A plan with two meals and one night stay where you can enjoy hot springs and local cuisine while looking out at the magnificent view of Yoro Valley! Relax in the rustic cave bath and black hot spring water, and enjoy local cuisine that incorporates river fish and seasonal wild vegetables. This plan is recommended for couples, families, and groups♪ [Food] The food is rich in local flavor, making use of river fish and seasonal wild vegetables. For the kabayaki eel at "Kawa no Ie no Unagi," eels are prepared freshly prepared in-house, steamed one by one at a time, and then turned over and grilled many times, so that they are soft on the inside and crispy and fragrant on the outside. Please enjoy your meal at your leisure in a private room or a partitioned banquet hall. [Hot Spring] There is a black hot spring cave bath and a bath (indoor bath) overlooking the river. These two hot springs are alternately used as men's, women's, and family baths. The black hot springs bubble up from the ground along with gas. The source is in front of the entrance, so please come and see it! [Rooms] We offer calming Japanese-style rooms overlooking the Yoro River. Mornings greeted by the chirping of wild birds are a rich experience. From your room, you can see river fish such as minnows and yamabe trout on the surface of the river. *Please note that if you make a reservation for two people, you may be assigned a room of 10 tatami mats or less depending on the reservation situation. [Sightseeing information in the area] ・Kurimata Falls / A waterfall located upstream of the Yoro River, about 4km from the hot spring town. ・Ichihara Elephant Kingdom / Approximately 500 animals of 150 species can be seen. ・Seichoji Temple / An ancient temple located near the top of Mount Seicho. ・Chiba Prefectural Sounan Museum: A museum with the theme of "Castles and Castle Towns of Boso."

    Rakuten Special OfferBonus Discount
    $244.18
    Taxes & fees incl.
    2 guests 1 night 1 room
    Meals
    • Breakfast
    • Dinner
    Cancellation policy
    Free cancellation deadline
    11/17/2025 11:59 p.m. (JST)
    3 day(s) before your stay (from 00:00) (JST)
    50%
    2 day(s) before your stay (from 00:00) (JST)
    70%
    1 day(s) before your stay (from 00:00) (JST)
    100%
    0 day(s) before your stay (from 00:00) (JST)
    100%
    No-show
    100%
    The penalty charges are based on the original rate of this room. However, if any discounts are applied, the incurred penalties will not exceed the total discounted amount of the reservation.The exchange rate is fixed when booking.

    Taxes & fees

    Included

    Consumption tax (from 10/1/2019) (Per person per night) 10%

    Excluded*

    Bathing tax (from 4/1/1950) (Per person per night)¥150

    * Excluded taxes and fees are approximated and may vary based on the property. They will be collected at the property at the time of check-in or check-out.

  • Unagi-juzen served with local cuisine
    Only 3 rooms left!
    Free cancellation until Nov 13
    Meal
    Breakfast
    Dinner
    Rakuten Special OfferBonus Discount
    Price for:
    1 night
     | 
     | 
    $272.91
    Taxes & fees incl.

    Coupon

    *The discount is calculated based on the original price.
    Plan details

    Specialty of the Riverside House: Unagi Juzen Plan - Recommended for eel lovers♪ [Breakfast] [Dinner]

    Free cancellation until 11/13/2025 11:59 p.m.(JST)

    Coupon

    *The discount is calculated based on the original price.

    This plan includes half the eel served in the regular plan, and includes a whole eel on rice, grilled in a special sauce that has been added to over the 50 years since the restaurant opened. We start with simmered mountain vegetables, tempura, sashimi, salt-grilled sweetfish, and more, and finish with a bowl of eel on rice. *Children will be served a half-eel bowl. This is a recommended and highly recommended plan for eel lovers. A dish rich in local flavor, made with river fish and seasonal mountain vegetables. At "Kawa no Ie no Unagi," the eels are broiled in-house, steamed one by one at the right time, and then turned and grilled multiple times, so that they are soft on the inside and crisp and fragrant on the outside. Please enjoy your meal at your leisure in a private room or in a partitioned banquet hall. [Hot Springs] There is a black hot spring cave bath and a bath (indoor bath) overlooking the river. These two hot springs are alternated between men's, women's, and family baths. The black hot springs bubble up from the ground along with gas. The source is in front of the entrance, so please come and see it! [Rooms] We have calming Japanese-style rooms overlooking the Yoro River. A morning greeted by the chirping of wild birds is a rich moment. From your room, you can see river fish such as minnows and yamabe trout on the river surface. *Please note that if you make a reservation for two people, you may be assigned a room of 10 tatami mats or less depending on the reservation situation. [Sightseeing Information in the Area] ・Kurimata Falls/A waterfall located upstream of the Yoro River, about 4km from the hot spring town. ・Ichihara Elephant Kingdom/About 500 animals of 150 species can be seen. ・Seicho-ji Temple: An ancient temple located near the summit of Mount Seicho. ・Chiba Prefectural Sounan Museum: A museum with the theme of "Castles and Castle Towns of Boso."

    Rakuten Special OfferBonus Discount
    $272.91
    Taxes & fees incl.
    2 guests 1 night 1 room
    Meals
    • Breakfast
    • Dinner
    Cancellation policy
    Free cancellation deadline
    11/13/2025 11:59 p.m. (JST)
    7 day(s) before your stay (from 00:00) (JST)
    20%
    3 day(s) before your stay (from 00:00) (JST)
    70%
    0 day(s) before your stay (from 00:00) (JST)
    100%
    No-show
    100%
    The penalty charges are based on the original rate of this room. However, if any discounts are applied, the incurred penalties will not exceed the total discounted amount of the reservation.The exchange rate is fixed when booking.

    Taxes & fees

    Included

    Consumption tax (from 10/1/2019) (Per person per night) 10%

    Excluded*

    Bathing tax (from 4/1/1950) (Per person per night)¥150

    * Excluded taxes and fees are approximated and may vary based on the property. They will be collected at the property at the time of check-in or check-out.

  • Grilled eel
    Only 3 rooms left!
    Free cancellation until Nov 17
    Meal
    Breakfast
    Dinner
    Rakuten Special OfferBonus Discount
    Price for:
    1 night
     | 
     | 
    $287.27
    Taxes & fees incl.

    Coupon

    *The discount is calculated based on the original price.
    Plan details

    Choose your hot pot ★ Kawanoie's specialty Haccho miso sauce Kazusa wagyu hot po [Breakfast] [Dinner]

    Free cancellation until 11/17/2025 11:59 p.m.(JST)

    Coupon

    *The discount is calculated based on the original price.

    Choose from two types of hot pot dishes and eat to your heart's content!1-night, 2-meals included plan~ Making the most of the characteristics of A5-grade Kazusa Wagyu and domestically sourced duck loin, resulting in two delicious hot pot dishes! Ideally, we would love for you to enjoy both hot pots, but please select one hot pot of your choice ♪ ※ If no preference is specified, we will serve Kawanoie's specialty Inobuta hot pot. =Selectable Hot Pot Dishes= 1. Kawanoie's specialty 'Haccho miso sauce Kazusa Wagyu hot pot'  Our special miso blended with Hatcho miso as a base, It enhances the deliciousness of A5-grade Kazusa Wagyu beef! *What is "Kazusa Wagyu beef"? It is characterized by a low melting point and light fat, making it a refreshing beef that you won't get tired of even if you eat a lot. 2.「Domestic duck loin shabu-shabu hot pot"  In addition to meat, you can enjoy 4-5 different ingredients. *"Duck loin" It has a low odor, just the right amount of crunch, umami, and sweetness. [Cuisine] In addition to hot pot dishes, local cuisine that makes use of river fish and seasonal wild vegetables for you to enjoy. In particular, our establishment's proud specialty, the 'River House Eel' kabayaki, features eels prepared at our facility, steamed at the perfect timing for each eel, and grilled repeatedly to achieve perfection. The inside is tender, and the outside is crispy and aromatic. Please enjoy your meal leisurely in a private room or a partitioned banquet hall. 【Hot Springs】 There is a cave bath and a black hot spring (indoor bath) with river breezes that feel pleasant on the skin. These two hot springs are alternated between men's, women's, and family baths. 【Room】 We have a calm Japanese-style room with a view of the Yoro River. Mornings greeted by the chirping of wild birds are a rich time. On the surface of the river overlooking from the room, there are river fish such as haya and yamabe You can take a look. * If you make a reservation for 2 people, the room may be 10 tatami mats or less depending on the reservation status. Please note that there is.

    Rakuten Special OfferBonus Discount
    $287.27
    Taxes & fees incl.
    2 guests 1 night 1 room
    Meals
    • Breakfast
    • Dinner
    Cancellation policy
    Free cancellation deadline
    11/17/2025 11:59 p.m. (JST)
    3 day(s) before your stay (from 00:00) (JST)
    50%
    2 day(s) before your stay (from 00:00) (JST)
    70%
    1 day(s) before your stay (from 00:00) (JST)
    100%
    0 day(s) before your stay (from 00:00) (JST)
    100%
    No-show
    100%
    The penalty charges are based on the original rate of this room. However, if any discounts are applied, the incurred penalties will not exceed the total discounted amount of the reservation.The exchange rate is fixed when booking.

    Taxes & fees

    Included

    Consumption tax (from 10/1/2019) (Per person per night) 10%

    Excluded*

    Bathing tax (from 4/1/1950) (Per person per night)¥150

    * Excluded taxes and fees are approximated and may vary based on the property. They will be collected at the property at the time of check-in or check-out.

Room details

10 to 12 tatami [Standard] [Japanese room] [Non-smoking] [Mountain view] [River view]

No smoking
Mountain view
Max 5 adults / 4 children
Room facilities
  • Internet available in room
  • Toilet available, no bath
  • Bidet toilet
8 tatami mats with bed
No smoking
Mountain view
139.5 ft²
Max 3 adults / 2 children
Room facilities
  • Internet available in room
  • Toilet available, no bath
  • Bidet toilet
  • * Indoor bath 1 (240-180)
    Only 2 rooms left!
    Free cancellation until Nov 17
    Meal
    Breakfast
    Dinner
    Rakuten Special OfferBonus Discount
    Price for:
    1 night
     | 
     | 
    $244.18
    Taxes & fees incl.

    Coupon

    *The discount is calculated based on the original price.
    Plan details

    ★Spectacular View!Enjoy the seasonal beauty of Yoro Valley★ A plan to savor local cuisine★ ☆ Meals served in private rooms [Breakfast] [Dinner]

    Free cancellation until 11/17/2025 11:59 p.m.(JST)

    Coupon

    *The discount is calculated based on the original price.

    A plan with two meals and one night stay where you can enjoy hot springs and local cuisine while looking out at the magnificent view of Yoro Valley! Relax in the rustic cave bath and black hot spring water, and enjoy local cuisine that incorporates river fish and seasonal wild vegetables. This plan is recommended for couples, families, and groups♪ [Food] The food is rich in local flavor, making use of river fish and seasonal wild vegetables. For the kabayaki eel at "Kawa no Ie no Unagi," eels are prepared freshly prepared in-house, steamed one by one at a time, and then turned over and grilled many times, so that they are soft on the inside and crispy and fragrant on the outside. Please enjoy your meal at your leisure in a private room or a partitioned banquet hall. [Hot Spring] There is a black hot spring cave bath and a bath (indoor bath) overlooking the river. These two hot springs are alternately used as men's, women's, and family baths. The black hot springs bubble up from the ground along with gas. The source is in front of the entrance, so please come and see it! [Rooms] We offer calming Japanese-style rooms overlooking the Yoro River. Mornings greeted by the chirping of wild birds are a rich experience. From your room, you can see river fish such as minnows and yamabe trout on the surface of the river. *Please note that if you make a reservation for two people, you may be assigned a room of 10 tatami mats or less depending on the reservation situation. [Sightseeing information in the area] ・Kurimata Falls / A waterfall located upstream of the Yoro River, about 4km from the hot spring town. ・Ichihara Elephant Kingdom / Approximately 500 animals of 150 species can be seen. ・Seichoji Temple / An ancient temple located near the top of Mount Seicho. ・Chiba Prefectural Sounan Museum: A museum with the theme of "Castles and Castle Towns of Boso."

    Rakuten Special OfferBonus Discount
    $244.18
    Taxes & fees incl.
    2 guests 1 night 1 room
    Meals
    • Breakfast
    • Dinner
    Cancellation policy
    Free cancellation deadline
    11/17/2025 11:59 p.m. (JST)
    3 day(s) before your stay (from 00:00) (JST)
    50%
    2 day(s) before your stay (from 00:00) (JST)
    70%
    1 day(s) before your stay (from 00:00) (JST)
    100%
    0 day(s) before your stay (from 00:00) (JST)
    100%
    No-show
    100%
    The penalty charges are based on the original rate of this room. However, if any discounts are applied, the incurred penalties will not exceed the total discounted amount of the reservation.The exchange rate is fixed when booking.

    Taxes & fees

    Included

    Consumption tax (from 10/1/2019) (Per person per night) 10%

    Excluded*

    Bathing tax (from 4/1/1950) (Per person per night)¥150

    * Excluded taxes and fees are approximated and may vary based on the property. They will be collected at the property at the time of check-in or check-out.

  • Unagi-juzen served with local cuisine
    Only 2 rooms left!
    Free cancellation until Nov 13
    Meal
    Breakfast
    Dinner
    Rakuten Special OfferBonus Discount
    Price for:
    1 night
     | 
     | 
    $272.91
    Taxes & fees incl.

    Coupon

    *The discount is calculated based on the original price.
    Plan details

    Specialty of the Riverside House: Unagi Juzen Plan - Recommended for eel lovers♪ [Breakfast] [Dinner]

    Free cancellation until 11/13/2025 11:59 p.m.(JST)

    Coupon

    *The discount is calculated based on the original price.

    This plan includes half the eel served in the regular plan, and includes a whole eel on rice, grilled in a special sauce that has been added to over the 50 years since the restaurant opened. We start with simmered mountain vegetables, tempura, sashimi, salt-grilled sweetfish, and more, and finish with a bowl of eel on rice. *Children will be served a half-eel bowl. This is a recommended and highly recommended plan for eel lovers. A dish rich in local flavor, made with river fish and seasonal mountain vegetables. At "Kawa no Ie no Unagi," the eels are broiled in-house, steamed one by one at the right time, and then turned and grilled multiple times, so that they are soft on the inside and crisp and fragrant on the outside. Please enjoy your meal at your leisure in a private room or in a partitioned banquet hall. [Hot Springs] There is a black hot spring cave bath and a bath (indoor bath) overlooking the river. These two hot springs are alternated between men's, women's, and family baths. The black hot springs bubble up from the ground along with gas. The source is in front of the entrance, so please come and see it! [Rooms] We have calming Japanese-style rooms overlooking the Yoro River. A morning greeted by the chirping of wild birds is a rich moment. From your room, you can see river fish such as minnows and yamabe trout on the river surface. *Please note that if you make a reservation for two people, you may be assigned a room of 10 tatami mats or less depending on the reservation situation. [Sightseeing Information in the Area] ・Kurimata Falls/A waterfall located upstream of the Yoro River, about 4km from the hot spring town. ・Ichihara Elephant Kingdom/About 500 animals of 150 species can be seen. ・Seicho-ji Temple: An ancient temple located near the summit of Mount Seicho. ・Chiba Prefectural Sounan Museum: A museum with the theme of "Castles and Castle Towns of Boso."

    Rakuten Special OfferBonus Discount
    $272.91
    Taxes & fees incl.
    2 guests 1 night 1 room
    Meals
    • Breakfast
    • Dinner
    Cancellation policy
    Free cancellation deadline
    11/13/2025 11:59 p.m. (JST)
    7 day(s) before your stay (from 00:00) (JST)
    20%
    3 day(s) before your stay (from 00:00) (JST)
    70%
    0 day(s) before your stay (from 00:00) (JST)
    100%
    No-show
    100%
    The penalty charges are based on the original rate of this room. However, if any discounts are applied, the incurred penalties will not exceed the total discounted amount of the reservation.The exchange rate is fixed when booking.

    Taxes & fees

    Included

    Consumption tax (from 10/1/2019) (Per person per night) 10%

    Excluded*

    Bathing tax (from 4/1/1950) (Per person per night)¥150

    * Excluded taxes and fees are approximated and may vary based on the property. They will be collected at the property at the time of check-in or check-out.

  • Abalone
    Only 2 rooms left!
    Free cancellation until Nov 17
    Meal
    Breakfast
    Dinner
    Rakuten Special OfferBonus Discount
    Price for:
    1 night
     | 
     | 
    $287.27
    Taxes & fees incl.

    Coupon

    *The discount is calculated based on the original price.
    Plan details

    Savor fresh abalone grilled to perfection & relax in a hot spring ☆ Meals served in a private room [Breakfast] [Dinner]

    Free cancellation until 11/17/2025 11:59 p.m.(JST)

    Coupon

    *The discount is calculated based on the original price.

    Enjoy fresh, sea-scented abalone served hot and sizzling♪ Relax in the rustic cave bath and black-water hot spring, and enjoy the spectacular sizzling abalone as well as other carefully selected local cuisine. The grilled eel is also delicious! Recommended for couples, families, and groups♪ [Food] - Grilled abalone - Local cuisine made with river fish and seasonal mountain vegetables The grilled eel at Kawanoie Unagi is made by steaming each eel freshly prepared in-house at the right time, then turning it over and grilling it again and again, so that it is soft on the inside and crispy and fragrant on the outside. Please enjoy your meal in a private room or in a partitioned banquet hall. [Hot spring] We have a cave bath and a black-water hot spring (indoor bath) where the river breeze feels good on the skin. These two hot springs are used as men's, women's, and family baths, depending on the time of day. The source of our hot spring is in front of the entrance, so please take a look! [Rooms] We have calming Japanese-style rooms overlooking the Yoro River. Mornings greeted by the chirps of wild birds are a rich time. You can see river fish such as minnows and yamabe on the river surface from your room. *Please note that if you make a reservation for two people, you may be assigned a room of 10 tatami mats or less depending on the reservation situation. [Nearby tourist information] ・Kurimata Falls/A waterfall located upstream of the Yoro River, about 4km from the hot spring town. ・Ichihara Elephant Kingdom/About 500 animals of 150 species can be seen. ・Kiyosumi-ji Temple/An ancient temple located near the top of Mt. Kiyosumi. ・Chiba Prefectural Sounan Museum/A museum with the theme of "Castles and Castle Towns of Boso".

    Rakuten Special OfferBonus Discount
    $287.27
    Taxes & fees incl.
    2 guests 1 night 1 room
    Meals
    • Breakfast
    • Dinner
    Cancellation policy
    Free cancellation deadline
    11/17/2025 11:59 p.m. (JST)
    3 day(s) before your stay (from 00:00) (JST)
    50%
    2 day(s) before your stay (from 00:00) (JST)
    70%
    1 day(s) before your stay (from 00:00) (JST)
    100%
    0 day(s) before your stay (from 00:00) (JST)
    100%
    No-show
    100%
    The penalty charges are based on the original rate of this room. However, if any discounts are applied, the incurred penalties will not exceed the total discounted amount of the reservation.The exchange rate is fixed when booking.

    Taxes & fees

    Included

    Consumption tax (from 10/1/2019) (Per person per night) 10%

    Excluded*

    Bathing tax (from 4/1/1950) (Per person per night)¥150

    * Excluded taxes and fees are approximated and may vary based on the property. They will be collected at the property at the time of check-in or check-out.

Room details

8 tatami [Standard] [Japanese room] [Non-smoking] [Mountain view] [River view]

No smoking
Mountain view
139.5 ft²
Max 3 adults / 2 children
Room facilities
  • Internet available in room
  • Toilet available, no bath
  • Bidet toilet