Uchinomaki Onsen, Aso, Kumamoto
Yumeoisō, Aso Uchinomaki Onsen
A large, family-oriented ryokan with a low-cost public bath and 15 private family baths available for day visitors. The operator describes the water as 100% natural hot spring and source-flowing, but its general day-use hours conflict with the detailed bath schedules on the same site. Check which baths are open if you plan to arrive between 10:00 and 15:00; tattoo rules are not published.
Facility photos
Check before bathing
- Opening hours
- The day-use summary lists 06:00–01:00, last reception 00:00; public bathing is ¥600 and private family baths start at ¥1,100. Detailed pages instead list some baths from 15:00 and again from 06:00 the next morning. Confirm the bath and time directly, especially for a 10:00–15:00 visit.
- Tattoo policy
- No clear tattoo policy was found on the current facility pages. Ask before visiting.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published.
- Spring source
- Aso Uchinomaki Onsen; the individual source name is not published.
- Spring classification
- Weakly alkaline simple spring.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- The operator describes the baths as 100% natural hot spring and source-flowing. It does not publish complete pool-by-pool details on dilution, heating, circulation or disinfection.
The operator's day-use summary and individual bath schedules differ. Confirm current access before relying on the stated opening hours.
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.
