A gourmet inn with western Japan's largest open-air bath, Dondoko-yu, where you can savor the blessings of Aso
Kumamoto Minamiaso Village
"Aso Baien SPA RESORT" is a hot spring resort hotel set on a vast property in Minami Aso. The attached "Hinoyama Onsen Dondoko-yu" boasts one of the largest scales in western Japan, with 12 different baths and a large sauna that can accommodate up to 30 people. Its spring quality is a sulfate spring, regarded as one of Japan's three most beautiful hot spring waters, and its milky green-white water is a distinctive feature. It offers abundant free-flowing natural spring water and is also expected to provide skin-beautifying benefits. Dinner features a luxurious buffet packed with ingredients from Aso, allowing guests to fully enjoy Aso's appeal through both its hot springs and its cuisine.
TypeNatural Hot Spring
A sulfate spring regarded as one of Japan's three most beautiful hot spring waters. Its milky green-white water is a distinctive feature, and it is known as a skin-beautifying bath that leaves the skin smooth. With abundant water from a free-flowing natural spring, you can fully enjoy it in a variety of baths, including one of the largest open-air baths in western Japan.
Sauna TypeDry Sauna
Capacity30people
A dry sauna located inside Dondoko-yu, boasting one of the largest spaces in western Japan. The spacious room accommodates up to 30 people, allowing you to work up a good sweat at your own pace. Heat circulation is excellent, helping warm your body from the core. After the sauna, you can enjoy an open-air bath in the spacious outdoor area and experience deep relaxation surrounded by the nature of Aso.
Water QualityTap Water
A cold plunge bath placed right next to the large sauna. Its pleasantly cool temperature gently tightens your body after the sauna. With multiple tubs available, it is ideal for a relaxed cooldown. The refreshing water quality further enhances the rejuvenating effect.
Closed Days: Open all year
147-10 Shimono, Minamiaso-mura, Aso-gun, Kumamoto 869-1402
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 gourmet inn with western Japan's largest open-air bath, Dondoko-yu, where you can savor the blessings of Aso
Kumamoto Minamiaso Village
"Aso Baien SPA RESORT" is a hot spring resort hotel set on a vast property in Minami Aso. The attached "Hinoyama Onsen Dondoko-yu" boasts one of the largest scales in western Japan, with 12 different baths and a large sauna that can accommodate up to 30 people. Its spring quality is a sulfate spring, regarded as one of Japan's three most beautiful hot spring waters, and its milky green-white water is a distinctive feature. It offers abundant free-flowing natural spring water and is also expected to provide skin-beautifying benefits. Dinner features a luxurious buffet packed with ingredients from Aso, allowing guests to fully enjoy Aso's appeal through both its hot springs and its cuisine.
TypeNatural Hot Spring
A sulfate spring regarded as one of Japan's three most beautiful hot spring waters. Its milky green-white water is a distinctive feature, and it is known as a skin-beautifying bath that leaves the skin smooth. With abundant water from a free-flowing natural spring, you can fully enjoy it in a variety of baths, including one of the largest open-air baths in western Japan.
Sauna TypeDry Sauna
Capacity30people
A dry sauna located inside Dondoko-yu, boasting one of the largest spaces in western Japan. The spacious room accommodates up to 30 people, allowing you to work up a good sweat at your own pace. Heat circulation is excellent, helping warm your body from the core. After the sauna, you can enjoy an open-air bath in the spacious outdoor area and experience deep relaxation surrounded by the nature of Aso.
Water QualityTap Water
A cold plunge bath placed right next to the large sauna. Its pleasantly cool temperature gently tightens your body after the sauna. With multiple tubs available, it is ideal for a relaxed cooldown. The refreshing water quality further enhances the rejuvenating effect.
Closed Days: Open all year
147-10 Shimono, Minamiaso-mura, Aso-gun, Kumamoto 869-1402
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