Renovated in 2024. A skin-beautifying hot spring bath with free-flowing natural spring water and an auto-löyly sauna
Hokkaido Shiraoi Town
"Kojohama Onsen Hotel (Nukumori no Yu)" is a hot spring hotel in Shiraoi Town, Hokkaido. It underwent a major renovation in 2024, and you can enjoy Kojohama Onsen, one of Hokkaido's most abundant hot spring sources, with 100% free-flowing natural spring water. The newly installed sauna features auto-löyly and a large 50-inch TV. Deck chairs are set up in the open-air bath, making it easy to enjoy a comfortable outdoor air bath. The hotel also has a spacious 60-tatami rest area, a recliner room, and a fitness gym, so you can enjoy an exceptional relaxation experience whether you visit for the day or stay overnight.
TypeNatural Hot Spring
Kojohama Onsen, which boasts one of the largest volumes of hot spring water in Hokkaido, is luxuriously used as 100% free-flowing natural spring water. Known as a "beauty bath," this high-quality water is gentle on the skin and warms you from deep within. In the spacious public bath and open-air bath, you can fully enjoy the blessings of abundant nature.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity10people
A full-scale sauna newly installed as part of the 2024 renovation, equipped with an auto-löyly function. A large 50-inch TV is installed, so you can sweat at your own pace. In a room kept at a powerful heat and moderate humidity, you can enjoy a pleasant sweating experience.
Water QualityTap Water
Capacity3people
A cold plunge bath located right next to the sauna. It lets you cool down your heated body at once after auto-löyly. The clean tub and crisp coldness help guide you toward totonou.
Closed Days: None
〒059-0641 Hokkaido, Shiraoi Town, Shiraoi District, 73-5 Kojohama
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more
Renovated in 2024. A skin-beautifying hot spring bath with free-flowing natural spring water and an auto-löyly sauna
Hokkaido Shiraoi Town
"Kojohama Onsen Hotel (Nukumori no Yu)" is a hot spring hotel in Shiraoi Town, Hokkaido. It underwent a major renovation in 2024, and you can enjoy Kojohama Onsen, one of Hokkaido's most abundant hot spring sources, with 100% free-flowing natural spring water. The newly installed sauna features auto-löyly and a large 50-inch TV. Deck chairs are set up in the open-air bath, making it easy to enjoy a comfortable outdoor air bath. The hotel also has a spacious 60-tatami rest area, a recliner room, and a fitness gym, so you can enjoy an exceptional relaxation experience whether you visit for the day or stay overnight.
TypeNatural Hot Spring
Kojohama Onsen, which boasts one of the largest volumes of hot spring water in Hokkaido, is luxuriously used as 100% free-flowing natural spring water. Known as a "beauty bath," this high-quality water is gentle on the skin and warms you from deep within. In the spacious public bath and open-air bath, you can fully enjoy the blessings of abundant nature.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity10people
A full-scale sauna newly installed as part of the 2024 renovation, equipped with an auto-löyly function. A large 50-inch TV is installed, so you can sweat at your own pace. In a room kept at a powerful heat and moderate humidity, you can enjoy a pleasant sweating experience.
Water QualityTap Water
Capacity3people
A cold plunge bath located right next to the sauna. It lets you cool down your heated body at once after auto-löyly. The clean tub and crisp coldness help guide you toward totonou.
Closed Days: None
〒059-0641 Hokkaido, Shiraoi Town, Shiraoi District, 73-5 Kojohama
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more