
An inn that boasts two open-air baths with 100% naturally sourced water. For dinner, try our Mashu sea bream sashimi — farmed in-house!


Free cancellation until 9/27/2026 11:59 p.m.(JST)
"I just want to enjoy the hot springs!" Recommended for those who feel this way! This is a room-only plan without meals. Check-in 15:00–20:00 [Hot Springs] Our facility offers three types of baths for you to enjoy. Indoor bath blessed with abundant hot water. Garden open-air bath surrounded by bamboo. Spacious men-only open-air bath *Closed during winter season (from December 1 to mid-April). After carefully considering the passage of time, changes in customer usage environments, and perspectives on privacy and safety, starting Friday, April 17, 2026, it has been decided to operate primarily as a "men-only open-air bath." We sincerely apologize for any inconvenience this may cause to our female guests. All baths feature 100% natural hot spring water directly sourced from the spring! Renowned for its skin-beautifying and soap-like effects, it's affectionately known as 'Beauty Bath.' [Local Attractions] Mount Io: 5 minutes by car from our facility. With a history as Sulfur Mountain, you can see vibrant yellow sulfur. Kamuy Kotan Lake: 40 minutes by car from Kiyosato city center via Route 115 It is said to be connected underground to Lake Mashu, with as much as 12,000 tons of water springing forth each day. Depending on the weather, the water surface appears emerald blue, and you can clearly see underwater. [Information] Starting April 1, 2022, we have discontinued the permanent provision of room amenities. Please bring your own toothbrush and razor (shaving razor). Thank you for your understanding. [Regarding cancellations due to bad weather, etc.] In the event of natural disasters such as typhoons or heavy snow, if transportation services are suspended or canceled, or roads are closed, making it difficult for you to visit our facility, cancellation fees will be waived. Cases eligible for cancellation fee waiver: ・Suspension, cancellation, or delays of transportation services (trains, planes, ships, etc.) ・Closure of general roads or highways ・Severe difficulty in reaching the facility due to traffic accidents, etc. *If any of the above applies, please contact our facility as soon as the situation becomes clear, even if it's on the day of arrival. *Cancellations made solely due to inclement weather are not eligible for cancellation fee waivers. Cancellation fees will only be waived if our facility determines that it is objectively difficult for you to visit due to transportation suspensions or road closures.
Consumption tax (from 10/1/2019) (Per person per night) 10%
Accommodation tax (from 4/1/2026) (Per person per night)¥100
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.

Free cancellation until 9/27/2026 11:59 p.m.(JST)
Breakfast-included plan at a reasonable price! Recommended for those who want to have dinner outside or are arriving late Check-in 15:00–20:00 [Breakfast] A comforting taste centered on Japanese cuisine. ・Served at the restaurant. ・Meals for both elementary school children and young children are the same as those for adults. [Hot Springs] Our facility offers three types of baths for you to enjoy. Indoor bath blessed with abundant hot water. Garden open-air bath surrounded by bamboo. Spacious men-only open-air bath *Closed during winter season (from December 1 to mid-April). After carefully considering the passage of time, changes in customer usage environments, and perspectives on privacy and safety, starting Friday, April 17, 2026, it has been decided to operate primarily as a "men-only open-air bath." We sincerely apologize for any inconvenience this may cause to our female guests. All baths feature 100% natural hot spring water directly sourced from the spring! Renowned for its skin-beautifying and soap-like effects, it's affectionately known as 'Beauty Bath.' At night, relax while gazing at the star-filled sky [Local Attractions] Mount Io: 5 minutes by car from our facility. Kamuy Kotan Lake: 40 minutes by car from Kiyosato city center via Route 115 [Information] Starting April 1, 2022, we have discontinued the permanent provision of room amenities. Please bring your own toothbrush and razor (shaving razor). Thank you for your understanding. [Regarding cancellations due to bad weather, etc.] In the event of natural disasters such as typhoons or heavy snow, if transportation services are suspended or canceled, or roads are closed, making it difficult for you to visit our facility, cancellation fees will be waived. Cases eligible for cancellation fee waiver: ・Suspension, cancellation, or delays of transportation services (trains, planes, ships, etc.) ・Closure of general roads or highways ・Severe difficulty in reaching the facility due to traffic accidents, etc. *If any of the above applies, please contact our facility as soon as the situation becomes clear, even if it's on the day of arrival. *Cancellations made solely due to inclement weather are not eligible for cancellation fee waivers. Cancellation fees will only be waived if our facility determines that it is objectively difficult for you to visit due to transportation suspensions or road closures.
Consumption tax (from 10/1/2019) (Per person per night) 10%
Accommodation tax (from 4/1/2026) (Per person per night)¥100
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.

Free cancellation until 9/27/2026 11:59 p.m.(JST)
*This plan only includes dinner. Breakfast is not included, so please be aware in advance. Enjoy natural hot springs with free-flowing source water and dishes featuring locally farmed Mashu sea bream! Recommended for those departing early! [Cuisine] Mashu sea bream farmed in-house in a source containing abundant minerals! Fresh Mashu Tai, firm in texture, is suitable for various dishes like sashimi and deep-fried preparations. Packed with collagen, it is highly popular for its healthy, mild flavor! Fun Facts Mashu sea bream... Originally, it was a fish called tilapia. Because of the similarity in taste and appearance, we named it Mashu sea bream after the land of Mashu. Dinner: Relish a Japanese-style meal centered around Mashu Tai. ・Served at the restaurant. ・Meals for both elementary school children and young children are the same as those for adults. [Hot Springs] Our facility offers three types of baths for you to enjoy. Indoor bath blessed with abundant hot water. Garden open-air bath surrounded by bamboo. Spacious men-only open-air bath *Closed during winter season (from December 1 to mid-April). All baths feature 100% natural hot spring water directly sourced from the spring! Renowned for its skin-beautifying and soap-like effects, it's affectionately known as 'Beauty Bath.' [Local Attractions] Mount Io: 5 minutes by car from our facility. Kamuy Kotan Lake: 40 minutes by car from Kiyosato city center via Route 115 [Information] Starting April 1, 2022, we have discontinued the permanent provision of room amenities. Please bring your own toothbrush and razor (shaving razor). Thank you for your understanding. [Regarding cancellations due to bad weather, etc.] In the event of natural disasters such as typhoons or heavy snow, if transportation services are suspended or canceled, or roads are closed, making it difficult for you to visit our facility, cancellation fees will be waived. Cases eligible for cancellation fee waiver: ・Suspension, cancellation, or delays of transportation services (trains, planes, ships, etc.) ・Closure of general roads or highways ・Severe difficulty in reaching the facility due to traffic accidents, etc. *If any of the above applies, please contact our facility as soon as the situation becomes clear, even if it's on the day of arrival. *Cancellations made solely due to inclement weather are not eligible for cancellation fee waivers. Cancellation fees will only be waived if our facility determines that it is objectively difficult for you to visit due to transportation suspensions or road closures.
Consumption tax (from 10/1/2019) (Per person per night) 10%
Accommodation tax (from 4/1/2026) (Per person per night)¥100
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.
Japanese room, Non-smoking