Kusatsu Onsen, Gunma
Kusatsu Onsen Ohtaki-no-yu
A strong choice for visitors who want several bathing styles in one place, especially the tiered Awase-yu baths. The Niekawa spring flows through the baths and cools naturally; the hotter pools should be used according to the day's conditions and posted guidance.
Check before bathing
- Tattoo policy
- The facility's current FAQ says tattooed guests are not specially refused. This policy applies to Ohtaki-no-yu and should not be assumed for other Kusatsu facilities.
Spring & water temperature
- Spring-source temperature
- No fixed source temperature for visitor use is published on the current main official page.
- Bathing temperature
- The Awase-yu baths have several temperature stages; fixed year-round temperatures are not published.
- Spring source
- Niekawa source.
- Spring classification
- Acidic sulfur spring.
- pH
- 2.1.
- Flow rate
- Not published.
- Water handling
- The Awase-yu pools use undiluted source water flowing through a series of baths and cooling naturally. The large indoor bath, outdoor bath and paid private bath also use natural spring water; a complete treatment table for every pool has not been published.
Adult admission is ¥1,200. A private bath costs ¥2,000 for one hour in addition to admission.
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.
