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Utopia Warakuen Shiriuchi Onsen Inn

知内温泉しりうちおんせん

Lodging
Hokkaido·Hokkaido

Bathing & Water

Cold BathYes

Cold water plunge bath, typically used after sauna

Capabilities

Private BathYes

Private bath available for day-use visitors or hotel guests to reserve

Mixed BathingYes

Shared bathing area for all genders

Policies & Services

WashingYes

Shower, wash stations, soap and shampoo provided

A 2026 reviewer found the provided body soap/conditioner's herbal scent intrusive, but confirms soap/conditioner is provided at the baths.

Highlights

Drinking Spring

Programs

About

Said to be the oldest hot spring in Hokkaido, with records going back to 1247. The inn runs three baths: an upper bath with soft, skin-smoothing water; a lower bath rich in iron, traditionally used to treat burns; and an open-air rotenburo (露天風呂) that can be used privately. The spring is a sodium chloride-bicarbonate type. The building is unassuming, but the water has a long local reputation.

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Onsen Oni

Last updated July 22, 2026