A hidden retreat in Aso-Uchinomaki where you can enjoy two different spring sources with 100% free-flowing natural hot spring water
Kumamoto Aso City
"Yunoyado Irifune" is a hot spring inn with 7 rooms in Uchinomaki Onsen in Aso City, Kumamoto Prefecture. Its greatest appeal is that guests can enjoy two rare spring sources in Uchinomaki Onsen, a neutral simple spring and a sodium, magnesium, and calcium sulfate spring, both as free-flowing natural hot spring water. It features an indoor bath, an open-air bath, and five private baths with different atmospheres, and overnight guests can soak in fresh water at any time, 24 hours a day. The bathtubs, made with rokko stone, a type of volcanic rock, offer a high far-infrared effect and warm you from the core. Together with creative cuisine made from fresh ingredients from the inn's own garden, guests can spend a deeply relaxing stay in a space where traditional Japanese design and modern furniture blend in harmony.
TypeNatural Hot Spring
A rare neutral simple spring in Uchinomaki Onsen, used as free-flowing natural hot spring water. The source is abundant, and even a small bath may overflow with milky-white water. With its smooth feel, it is expected to help relieve a wide range of concerns, including stiff joints and muscle pain. In designer open-air baths and other settings, you can savor fresh hot spring water while feeling the changing seasons.
TypeNatural Hot Spring
The other spring source that Irifune takes pride in, characterized by colorless, clear water. It is so abundant that it is even used for shower water. In the large bath and indoor bath, you can enjoy it in bathtubs made with rokko stone (basalt), which has a high far-infrared effect. Combined with the hot spring, it warms you from the core. It is especially effective for improving circulation and relieving fatigue.
24 Hours
Closed Days: Open all year
834-2 Koori, Aso City, Kumamoto Prefecture 869-2307
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
A hidden retreat in Aso-Uchinomaki where you can enjoy two different spring sources with 100% free-flowing natural hot spring water
Kumamoto Aso City
"Yunoyado Irifune" is a hot spring inn with 7 rooms in Uchinomaki Onsen in Aso City, Kumamoto Prefecture. Its greatest appeal is that guests can enjoy two rare spring sources in Uchinomaki Onsen, a neutral simple spring and a sodium, magnesium, and calcium sulfate spring, both as free-flowing natural hot spring water. It features an indoor bath, an open-air bath, and five private baths with different atmospheres, and overnight guests can soak in fresh water at any time, 24 hours a day. The bathtubs, made with rokko stone, a type of volcanic rock, offer a high far-infrared effect and warm you from the core. Together with creative cuisine made from fresh ingredients from the inn's own garden, guests can spend a deeply relaxing stay in a space where traditional Japanese design and modern furniture blend in harmony.
TypeNatural Hot Spring
A rare neutral simple spring in Uchinomaki Onsen, used as free-flowing natural hot spring water. The source is abundant, and even a small bath may overflow with milky-white water. With its smooth feel, it is expected to help relieve a wide range of concerns, including stiff joints and muscle pain. In designer open-air baths and other settings, you can savor fresh hot spring water while feeling the changing seasons.
TypeNatural Hot Spring
The other spring source that Irifune takes pride in, characterized by colorless, clear water. It is so abundant that it is even used for shower water. In the large bath and indoor bath, you can enjoy it in bathtubs made with rokko stone (basalt), which has a high far-infrared effect. Combined with the hot spring, it warms you from the core. It is especially effective for improving circulation and relieving fatigue.
24 Hours
Closed Days: Open all year
834-2 Koori, Aso City, Kumamoto Prefecture 869-2307
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