Kinushima Hot Spring
TypeNatural Hot Spring
A calcium-sodium chloride spring. The water retains heat well so you are less likely to get chilled after bathing, and you can sense the minerals of the sea.
Resort spa with panoramic views of the Seto Inland Sea
Kagawa Higashikagawa City
Seto Inland Sea Resort Vessel Oochi is a multi-purpose facility in Higashikagawa City, boasting panoramic views of the Seto Inland Sea. The saunas include a high-temperature dry sauna approaching 100℃ and a steam sauna. The cold plunge bath is well chilled at around 16℃ to sharply cool the body after a sauna. Enjoying an outdoor rest while feeling the sea breeze is a sublime experience.
TypeNatural Hot Spring
A calcium-sodium chloride spring. The water retains heat well so you are less likely to get chilled after bathing, and you can sense the minerals of the sea.
Sauna TypeDry Sauna
Stove Typefar_infrared
Capacity6people
A compact dry sauna. With heat close to 100℃, it provides a solid, intense warmth in a quiet environment where you can focus on sweating.
Sauna TypeSteam Sauna
Capacity6people
A steam sauna filled with mist. The perceived temperature is relatively high, warming you thoroughly down to your toes.
Water Qualitytap
Capacity2people
A constantly replenished, fresh cold plunge bath. At around 16℃ it is very cold and cools the body effectively after the sauna.
Closed Days: None
1200 Mashino, Higashikagawa City, Kagawa Prefecture 769-2520, 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
Resort spa with panoramic views of the Seto Inland Sea
Kagawa Higashikagawa City
Seto Inland Sea Resort Vessel Oochi is a multi-purpose facility in Higashikagawa City, boasting panoramic views of the Seto Inland Sea. The saunas include a high-temperature dry sauna approaching 100℃ and a steam sauna. The cold plunge bath is well chilled at around 16℃ to sharply cool the body after a sauna. Enjoying an outdoor rest while feeling the sea breeze is a sublime experience.
TypeNatural Hot Spring
A calcium-sodium chloride spring. The water retains heat well so you are less likely to get chilled after bathing, and you can sense the minerals of the sea.
Sauna TypeDry Sauna
Stove Typefar_infrared
Capacity6people
A compact dry sauna. With heat close to 100℃, it provides a solid, intense warmth in a quiet environment where you can focus on sweating.
Sauna TypeSteam Sauna
Capacity6people
A steam sauna filled with mist. The perceived temperature is relatively high, warming you thoroughly down to your toes.
Water Qualitytap
Capacity2people
A constantly replenished, fresh cold plunge bath. At around 16℃ it is very cold and cools the body effectively after the sauna.
Closed Days: None
1200 Mashino, Higashikagawa City, Kagawa Prefecture 769-2520, 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