Kagawa · Kan'onji & Kotohiki Park
Kamenoi Hotel Kanonji (Boshin Onsen)
亀の井ホテル 観音寺（母神温泉）
A 55-room hotel in Kanonji, Kagawa, born from the former Kampo-no-Yado Kanonji. Its natural Boshin Onsen spring, drawn from some 1,200 metres underground, fills the large bath and open-air baths. The two bath halls switch between men and women daily, so morning and evening you can try both distinctive open-air baths: Kotone-no-Yu, where a suikinkutsu water-harp sings, and Madoka-no-Yu, a cylindrical bamboo-themed bath. A low-temperature sauna is attached. Day bathing runs 11:00-15:00 at an affordable 600 yen for adults and 300 yen for children. About 8 minutes by taxi from JR Kanonji Station, with parking available.
- Price (adult)
- ¥600
- Hours
- 11:00-15:00 (day bathing)
- Closed
- Irregular closing (call ahead before visiting)
- Access
- 1101-4 Ikenojiri-cho, Kanonji, Kagawa (postal code 768-0031). About 8 minutes by taxi from JR Kanonji Station. Parking available.
- Tattoos
- Ask ahead
- Phone
- 0875-27-6161
- Open in Google Maps
- Google Maps ↗
Essentials
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Why go
- Natural Boshin Onsen drawn from about 1,200 m underground; large bath, open-air baths and a low-temperature sauna
- Two distinctive open-air baths - suikinkutsu-sound Kotone-no-Yu and bamboo-themed Madoka-no-Yu - switch sides daily
- Day bathing 11:00-15:00: 600 yen adults, 300 yen children (6-12); about 8 minutes by taxi from Kanonji Station
Before you go
- No official tattoo policy is published — ask at reception.
- Ryokan day-use hours are limited and may be suspended in peak season — phone the same morning.
- Payment is usually by ticket machine in cash — bring coins.
- Last entry is 30–60 minutes before closing.
Features
Sauna & wellness
Only here
Who with
Convenience
Amenities
✔ Verified operating: 2026-10 Operating status and rates cross-checked against the official site and onsen guides (full source notes in Japanese on the JA page)
Prices and hours change. Check official sources before visiting.
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