Natural Seawater Hot Spring (Shiokaze Bath)
TypeNatural Hot Spring
A hot spring using clear seawater filtered underground from Ariake Beach. Rich in minerals, it helps stimulate metabolism.
Kotohiki Kairo
A sauna theme park with 11 saunas and 7 cold plunge baths
Kagawa Kanonji City
Kotohiki Kairo, a scenic hot spring facility facing the Seto Inland Sea. Renovated extensively in 2024, it has evolved into a sauna theme park featuring an ocean-view Ship Sauna and a giant cold plunge bath made from a soy sauce barrel, among 11 types of saunas and 7 cold plunge baths. Alongside a natural seawater hot spring, an exceptional totonou experience awaits.
Hot Spring & Bath Information
Natural Seawater Hot Spring (Shiokaze Bath)
TypeNatural Hot Spring
A hot spring using clear seawater filtered underground from Ariake Beach. Rich in minerals, it helps stimulate metabolism.
Sauna
Ship Sauna
90°CSauna TypeDry Sauna
Stove Typestone
Capacity15people
Men'sWomen's
A spectacular ocean-view sauna overlooking the Seto Inland Sea. It delivers the thrilling sensation of setting sail.
Kama Sauna
90°CSauna TypeDry Sauna
Capacity6people
Men'sWomen's
A Japanese-style sauna modeled on the traditional steam baths of Japan. Enjoy sweating in its distinctive atmosphere.
Cold Bath
Setouchi Seawater Cold Plunge Bath
16°CWater Qualitynatural
Capacity6people
Men'sWomen's
A rare cold plunge bath filled with seawater drawn from the Seto Inland Sea. It offers a Nordic-like experience of plunging into the sea after a sauna.
Shodoshima Soy Sauce Barrel Cold Plunge Bath
15°CWater Qualitywell
Capacity8people
Men'sWomen's
A giant reused soy sauce barrel converted into a cold plunge bath. Its depth lets you stand and soak up to your shoulders.
Business Hours
Monday
11:00〜23:00
Tuesday
11:00〜23:00
Wednesday
11:00〜23:00
Thursday
11:00〜23:00
Friday
11:00〜23:00
Saturday
11:00〜23:00
Sunday
11:00〜23:00
Holiday
11:00〜23:00
Closed Days: None
Address
6-6 Ariakecho, Kanonji, Kagawa 768-0062, Japan
Hotel & Ryokan
Gender Access
Gender Separated
🚫
Tattoo Policy
No Tattoos
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