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
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
Restaurant or dining open to visitors (not just hotel meal plans)
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 June 25, 2026