Relaxed Public Bathhouse, “Monta’s Hot Bath”
くつろぎ湯処 紋太の湯
Day Use
YesClosed on the first Wednesday of each month.
Adult (junior-high age and up) 650 yen; elementary school 330 yen; toddler age 2+ 130 yen; a senior discount of 550 yen applies for age 65+ if entering by 15:30. Discount ticket books, and group rates (550 yen per person for 4 adults, or 1,760 to 1,980 yen for family sets) are also available.
Bathing & Water
Heated tap water, not a natural hot spring
Site describes the water as natural groundwater/underflow (伏流水) from Mt. Mombetsu, not hot-spring water; multiple Google reviews independently confirm it is heated groundwater and "not a natural hot spa".
Enclosed indoor bathing area
Dry heat sauna room
Aggregators describe an L-shaped 3-tier dry sauna (~82°C, capacity ~20) plus a second underground dome-shaped "muro" dry sauna; one older aggregator (nifty) instead calls the second room a mist sauna — unresolved, see gaps.
Cold water plunge bath, typically used after sauna
Reviews and an aggregator (sauna-ikitai) describe two separate cold pools.
Capabilities
Shared bathing area for all genders
No mention of mixed bathing (混浴) anywhere across the official page, 5 Google reviews, and 4 aggregator listings reviewed; treated as a standard gender-separated day-use bathhouse.
Policies & Services
Allows entry with visible tattoos
Only source for tattoo policy is the sauna-ikitai facility-info tag; not confirmed on the official site.
Welcomes children and families
Site's own price list includes elementary-school and toddler (2+) tiers plus family-group discounts, implying children are welcome.
Restaurant or dining open to visitors (not just hotel meal plans)
An older nifty-onsen aggregator summary mentions on-site dining, likely stale (that page also references a 2013 reopening); the official page's current statement of no food service was kept.
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Relaxation space for after bathing
On-site or nearby parking available
Highlights
Jet Bath
Foot Bath
Lukewarm BathAbout
Monta no Yu (紋太の湯) is a day-use bathhouse tucked inside a shopping complex in Mombetsu, sharing its entrance with a yakiniku restaurant and sitting next to a supermarket. Inside there's a proper spread of indoor baths: a medium one, a hotter one, a reclining bath you can stretch all the way out in, a foot bath that used to be a waterfall shower, and two cold plunges kept running fresh rather than left still. There's also a dry sauna and a tatami rest room stocked with manga. The water here isn't from a hot spring, it's heated groundwater drawn from beneath Mt. Mombetsu, and the place is upfront about that. For a stretch of town with no sento of its own, it's become the place locals and passing travelers go to wash off the day.
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Last updated July 30, 2026