Shinyu, Unzen, Nagasaki Prefecture
Unzen Shinyu Onsenkan
A very low-cost neighborhood bath in Unzen's Shinyu area. Current hours and prices are clear, but the latest individual spring analysis and tattoo rule were not available in the material reviewed.
Check before bathing
- Opening hours
- 09:00–22:00; closed Wednesdays. Adults ¥200 and children ¥100. About three parking spaces are listed.
- Access
- In the Shinyu area of Unzen's hot-spring district. Do not confuse this public bath with the separate Yuyado Unzen Shinyu inn.
- Tattoo policy
- The current tourism page does not provide a tattoo rule that can be treated as a standing policy; check before visiting if needed.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published; an older on-site reading of about 41°C is not treated as a current fixed setting.
- Spring source
- A Shinyu-area source; the individual source name is not published.
- Spring classification
- Older Unzen tourism information describes an acidic sulfur spring; a current facility-specific analysis was not available.
- pH
- 2.4
- Water handling
- Older tourism information says water is piped directly from the Unzen Jigoku area and adjusted through hotter and cooler taps. Current pool-by-pool water-addition, heating, circulation and disinfection details are not fully published.
Acidic water may irritate sensitive skin and mucous membranes. Be cautious if you feel unwell, have been drinking, or have a chronic condition.
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.
