Gero, Gifu
Bosenkan Day-Use Baths
The day-use baths draw on Gero's alkaline spring system, but Bosenkan had announced a facility-wide closure for electrical and plumbing inspections and room renovations in September 2026. The stated reopening time was a plan, not confirmation that work finished on schedule; check with the hotel before going.
Check before bathing
- Opening hours
- A facility-wide closure was announced from 10:30 on September 7, 2026, with reopening planned for 15:00 on September 11. That reopening was not independently confirmed in the material reviewed.
Spring & water temperature
- Spring-source temperature
- Not published for this facility.
- Bathing temperature
- 43°C.
- Spring source
- Gero Onsen's centralized spring supply.
- Spring classification
- Alkaline simple spring.
- pH
- 8.9.
- Water handling
- The reviewed profile describes slight water addition, no heating, discharge with partial circulation and filtration, and disinfection. The stated flow is 48 L/min, with a full water change weekly.
The facility-wide closure dates above include electrical and plumbing inspections and room renovations; confirm the current operating status before visiting.
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.
