Ofuro no Osama - Oimachi
おふろの王様 大井町店おふろのおうさま おおいまちてん
Day Use
YesLast entry 07:30. Morning bath 6:30–8:30 (last entry 7:30). Main admission 9:30–2:00 next day (last entry 1:00). Entry not allowed from 1:00 to 6:30. Bathing not allowed from 2:00 to 6:30 due to cleaning. Ganbanyoku 9:30–23:30 (last entry 22:30). Restaurant 11:00–23:30 (last order 23:00). Open year-round.
Adults: Weekdays ¥1,500, weekends and holidays ¥1,950 / Children: Weekdays ¥870, weekends and holidays ¥870. Ganbanyoku: ¥800 for adults (junior high school and older) 9:30–23:30 (last entry 22:30) on weekdays, weekends and holidays. Ganbanyoku wear included. For safety, children elementary school age and under cannot use. Bathing coupon book (5 tickets): Weekdays ¥7,000 / All days ¥9,250. Using weekday bathing coupons on weekends and holidays requires an additional bathing fee of ¥450. No refunds for coupon books. Admission fee includes rental towel set.
Bathing & Water
Open-air outdoor bath
Rotenburo made of natural stone (artificial hot spring introduced)
Enclosed indoor bathing area
Dry heat sauna room
Kings sauna (high temperature), herbal steam bath, cold water bath
Cold water plunge bath, typically used after sauna
Uses natural hot spring water
Not a natural hot spring, artificial hot spring replicating hot spring components
Capabilities
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
Welcomes children and families
Child (elementary school and under) rates available. Ganbanyoku not available for elementary school children or younger for safety reasons.
Restaurant or dining open to visitors (not just hotel meal plans)
Dining area Tenpu (11:00–23:30, last order 23:00)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Admission fee includes rental towel set
On-site or nearby parking available
220 parking spaces, height limit 2.1m, free parking time available depending on usage amount
Highlights
Jet Bath
Ganbanyoku
Steam SaunaAbout
A day-use bathing facility located 2-3 minutes on foot from JR, Tokyu, and Rinkai Line Oimachi Station. The rotenburo features artificial hot spring water replicating natural hot spring components, with high-concentration carbonated spring, silk bath, various jet baths, Kings sauna, and herbal steam bath. The ganbanyoku 'Flame Room' uses projection mapping and offers a löyly experience. Dining area 'Tenpu' and body care, akasuri, and esthetic services are available.
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Last updated June 25, 2026