Ofuro no Osama - Seya
おふろの王様 瀬谷店おふろのおうさま せやてん
Day Use
YesLast admission 24:00. Open year-round.
Adults: Weekdays ¥850, weekends and holidays ¥1,050 / Children: Weekdays ¥350, weekends and holidays ¥350. Free for children under elementary school age. Bathing ticket book (10 tickets) general ¥6,500. No refunds for ticket books. Please note. Additional bathing fee of ¥100 required when using ticket book on Saturdays, Sundays, and holidays. Towels etc. are not included in the admission fee.
Bathing & Water
Open-air outdoor bath
Rotenburo available. Black water hot spring × carbonated bath, Kokochi-yu (natural hot spring), etc.
Enclosed indoor bathing area
Dry heat sauna room
Authentic dry sauna 'Shakunetsu'.
Cold water plunge bath, typically used after sauna
Cold water bath 'Ryosen'.
Uses natural hot spring water
Black water hot spring and natural hot spring 'Kokochi-yu'. Water quality name not specified.
Capabilities
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
Welcomes children and families
Child (elementary school) rates available, free for children under elementary school age.
Restaurant or dining open to visitors (not just hotel meal plans)
Dining area Oju-an (11:00–24:00, last order 23:30).
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Towels etc. are not included in the admission fee (sold or rented separately).
Relaxation space for after bathing
Rest areas including Yumemi-dokoro and Utatane no Yu.
On-site or nearby parking available
Free parking for 180 cars, height limit 2.1m, bicycle parking available.
Highlights
Boat Bath
Electric Bath
Jet BathAbout
Ofuro no Osama Seya is a day-use onsen facility located in Seya Ward, Yokohama City, Kanagawa Prefecture. It features baths combining black water hot spring and high concentration carbonated spring that are resistant to cooling, as well as the natural hot spring 'Kokochi-yu', tsubo-yu, various jet baths, and a dry sauna called 'Shakunetsu'. The facility includes dining area Oju-an, body care, akasuri, and haircut services. Parking for 180 cars is free.
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Last updated June 19, 2026