ホテルテトラリゾート十勝川ほてる てとら りぞーと とかちがわ
On Tuesdays the bath opens later, at 17:00, for a deep clean instead of the usual morning opening; last admission is 23:00.
Adults (junior high and up) pay 600 yen, elementary schoolers 300 yen, and preschoolers go free. Bath and face towel rental is 200 yen (rental only, not sold). A 12-visit ticket book is 6,000 yen with no expiry, and half-year and annual passes are also available.
Uses natural hot spring water
Own source spring; site lists spring quality as 弱アルカリ性低張性冷鉱泉 (weakly alkaline, hypotonic cold mineral spring).
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Dry infrared sauna; site states löyly (steam) service is not offered because it causes equipment failures.
Private onsen bath in guest rooms, for overnight guests only
Rooms (twin/single/washitsu-yoshitsu) are described only with an ordinary unit bath; no room-onsen is mentioned.
Shared bathing area for all genders
Site lists separate men's/women's changing-room amenities, implying gender-separated baths, not mixed bathing.
Welcomes children and families
Kids' yukata sizes, kids' tableware, and a dedicated kids' play space with staff-made playground equipment are all provided.
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
200 yen rental fee for day-use visitors; explicitly rental only, not sold.
On-site or nearby parking available
Hotel Tetora Resort Tokachigawa draws on its own source spring in the Tokachigawa hot spring area of Hokkaido, and the water comes out soft and clear in both the indoor bath and the rotenburo, which faces the on-site infrared sauna. A top-floor observation room gives a wide view over the surrounding fields and a nearby bridge, with wintering swans in season and distant fireworks in summer. The hotel leans family-friendly, with kids' yukata sizes and a play area staff built by hand, and it's popular with local day bathers as well as overnight guests.
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Last updated July 23, 2026