Uchinomaki Onsen, Aso, Kumamoto
Yunoyado Irifune
A versatile small inn with two spring types, outdoor bathing and five private family baths. Private baths cannot be reserved and may be reduced from five rooms to three in winter if spring temperatures are insufficient. Day-use hours and closure dates can change, so check the current monthly notice.
Facility photos
Check before bathing
- Opening hours
- Public bath ¥600 for adults and ¥350 for children. Private baths: 50 minutes for ¥1,700, ¥1,800 or ¥2,000, depending on the bath. Usually 13:00–21:00, last reception 20:00; normally closed Wednesdays, with additional dates announced. September 3, 2026 was also listed as a closure.
Spring & water temperature
- Spring-source temperature
- Not published on the current operator page.
- Bathing temperature
- Not published; the operator describes some pools as hotter and larger pools as warmer without fixed figures.
- Spring source
- Two springs are used; individual source names are not published.
- Spring classification
- Neutral simple spring (hypotonic, neutral, high-temperature) and sodium-magnesium-calcium sulfate spring (neutral, hypotonic, high-temperature).
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- The operator states that both springs are source-flowing and uses them in the indoor, outdoor and private baths. In winter, insufficient spring temperature may reduce the number of available private baths from five to three.
Private baths are assigned by same-day availability, not advance reservation. Additional day-use closure dates may be announced monthly.
How to read a bath profile
Spring-source temperature and actual bathing temperature are kept separate. Each score is shown independently for comparison rather than collapsed into one overall score.
