A mid-sized hotel on the lakeside promenade of Lake Tōya, and a rarity here: day bathing for just ¥600. The 'Tono-yu / Hime-yu' baths have granite-clad open-air tubs, bubble baths and a sauna, and the bicarbonate–chloride–sulphate water keeps you warm long after. Day use is accepted 13:00–21:00. From late April to the end of October, the Lake Tōya long-run fireworks go up over the water every night from 20:45, and a stroll along the shore before a soak is a lovely routine. With neighbouring resort hotels charging ¥1,000+, this is the value pick. About 20 minutes by bus from Tōya Station to 'Tōyako Onsen', then 5 minutes on foot.

✔ Verified operating: 2026-09 洞爺湖温泉観光協会（日帰り大人600円）／近畿日本ツーリスト（受付13–22時）・キャンピングラボ（13–21時）

Prices and hours change. Check official sources before visiting.

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