Natural hot spring Heiwajima
天然温泉 平和島てんねんおんせん へいわとう
Day Use
YesThe facility itself never closes, but individual areas keep their own schedule. The Viewing Spa bathing area closes for cleaning from 2:30am to 6am, and the Shining Spa area from 6am to 9:30am. Ganbanyoku runs from 10am to 10pm, and the Yurari restaurant serves until 10pm Sunday through Thursday and until 11pm on Fridays and Saturdays. The reserved-seating premium lounge is open from 6pm to 9am, plus 11am to 5pm on weekends and holidays.
The standard day-use plan (with towel and loungewear, up to 7 hours) costs 2,400 yen on weekdays and 2,900 yen on weekends and holidays. A quick 1-hour plan is 1,400 yen on weekdays, or 1,600 yen for the weekend early-bird plan (5am to 9am). Staying between 1am and 5am adds a 1,900 yen late-night charge, and extending your stay costs 400 yen per hour. Ganbanyoku is a separate 700 yen add-on; student and senior (age 70+) discount plans are also available.
Bathing & Water
Uses natural hot spring water
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Capabilities
Shared bathing area for all genders
Baths are separated by gender (e.g. male/female Togoru-yu tubs). The FAQ's mixed-bathing note applies only to accompanied children under age 7 or 120cm tall, a standard family-bathing exception rather than general mixed bathing.
Policies & Services
Allows entry with visible tattoos
4 stickers 10x15cm
Welcomes children and families
Children of elementary-school age or younger may not enter alone; a guardian must accompany them, and anyone under 18 must be accompanied after 22:00.
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Towel and loungewear are bundled into the entry-plan price rather than a separate rental fee, but are provided to every visitor.
Relaxation space for after bathing
On-site or nearby parking available
Highlights
Ganbanyoku
Jet BathAbout
The bathing area is fed by a salty natural hot-spring water that leaves skin feeling smooth. Alongside the tubs there's a jet bath and a carbonated bath, a hot sauna, and a cold bath, plus a multi-room ganbanyoku heated with different kinds of stone, including a women-only section. Baths are separated by gender. The complex sits inside the BIGFUN Heiwajima building in Ota-ku and stays open 24 hours, so it's often used as a stopover by travelers catching early or late flights out of nearby Haneda Airport. Besides the baths there's a restaurant, a reclining-chair lounge, and a large manga collection to work through during an overnight stay.
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Last updated August 5, 2026