Tanaka-cho, Naka Ward, Hiroshima City
Ondo Onsen
A leading choice around Hatchobori and Nagarekawa if you want a genuine natural hot spring in the city and late opening hours at a ¥500-range price.
Check before bathing
- Tattoo policy
- The current first-party information reviewed does not confirm a tattoo policy. Ask the bathhouse before visiting.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published.
- Spring source
- Ondo Onsen's own spring, drawn from about 850 m underground; the individual well name is not published.
- Spring classification
- Sodium chloride spring.
- pH
- Not published in the current material summarized here.
- Flow rate
- Not published in the current material summarized here.
- Water handling
- The facility uses natural spring water drawn from about 850 m underground. Current public pages do not confirm water addition, heating, circulation, disinfection or the extent of source flow in each pool.
Bathing indications
Hiroshima Prefecture's tourism site lists general bathing indications including neuralgia, joint pain and fatigue. These are not treatment guarantees.
The current public pages do not specify water treatment for each pool.
A prefectural tourism page still lists ¥450, a price current in April 2022. Visitor information from late 2025 and 2026 has moved to the ¥500 range; do not rely on the old figure.
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.
