花巻温泉郷 台温泉 いやしろの湯 ホテル三右ェ門はなまきおんせんごう だいおんせん いやしろのゆ ほてるさんえもん
The only rotenburo in Dai Onsen, with sulfur water run kakenagashi
Closed one day each month; closure dates are posted on the official site news page.
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Shared bathing area for all genders
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
Hotel San-emon sits in Dai Onsen (台温泉), a small hot spring village in Hanamaki, and has the only rotenburo (open-air bath) in the area. The water is a faint sulfur spring, run kakenagashi (non-recirculating, straight from the source). There is also a spacious indoor bath. The building is older but well kept, and the place draws guests who want somewhere quiet away from the busier onsen towns.
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Last updated September 19, 2026