A comprehensive spa with source-flowing moor spring and a large sauna
Yamanashi Kofu City
Healthy SPA Sunroad in Kofu is a full-service bathing facility themed around health. You can enjoy an amber-colored, plant-derived moor spring flowing directly from its source (a sodium bicarbonate-chloride high-temperature spring) that is said to leave skin smooth. The large dry sauna, which accommodates more than 20 people, features automatic löyly for a satisfying sweat. There is also a spacious well water cold plunge bath with continuous flow and an open-air relaxation area overlooking a mural of Mount Fuji, offering an exceptional totonou experience.
Typeindoor
An amber-colored moor spring infused with ancient plant matter. The source water flows directly into indoor baths, outdoor rock baths, and tub baths, offering strong heat retention and expected skin-beautifying effects.
Sauna TypeDry Sauna
Stove Typefar_infrared
Capacity20people
A two-tiered large dry sauna that comfortably fits over 20 people. Set at around 80°C for a medium-high temperature, regular automatic löyly maintains humidity so you can sweat comfortably without feeling suffocated.
Water Qualitynatural
Capacity8people
A spacious cold plunge bath that can hold about eight people at once. The water temperature is around 20°C, and because it uses underground well water, it feels soft on the skin and allows for long, comfortable soaks.
Closed Days: None
4144-4 Osatocho, Kofu, Yamanashi 400-0053, Japan
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 moreA comprehensive spa with source-flowing moor spring and a large sauna
Yamanashi Kofu City
Healthy SPA Sunroad in Kofu is a full-service bathing facility themed around health. You can enjoy an amber-colored, plant-derived moor spring flowing directly from its source (a sodium bicarbonate-chloride high-temperature spring) that is said to leave skin smooth. The large dry sauna, which accommodates more than 20 people, features automatic löyly for a satisfying sweat. There is also a spacious well water cold plunge bath with continuous flow and an open-air relaxation area overlooking a mural of Mount Fuji, offering an exceptional totonou experience.
Typeindoor
An amber-colored moor spring infused with ancient plant matter. The source water flows directly into indoor baths, outdoor rock baths, and tub baths, offering strong heat retention and expected skin-beautifying effects.
Sauna TypeDry Sauna
Stove Typefar_infrared
Capacity20people
A two-tiered large dry sauna that comfortably fits over 20 people. Set at around 80°C for a medium-high temperature, regular automatic löyly maintains humidity so you can sweat comfortably without feeling suffocated.
Water Qualitynatural
Capacity8people
A spacious cold plunge bath that can hold about eight people at once. The water temperature is around 20°C, and because it uses underground well water, it feels soft on the skin and allows for long, comfortable soaks.
Closed Days: None
4144-4 Osatocho, Kofu, Yamanashi 400-0053, Japan
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