Thermae-Yu
テルマー湯
Kabukicho · near Shinjuku Station / Shinjuku-sanchome
Large modern hot-spring and sauna complex in central Shinjuku, open around the clock. Natural onsen water is trucked in; multiple baths, saunas and relaxation lounges.
Honest drawbacks: Busy nightlife-district location; tattoo rules are complicated and applied at staff discretion.
- Time to allow
- 3h
- Opening hours
- Open 24 hours
- Price band
- mid
- Booking
- Usually walk-in
- English
- ★★★☆☆
- Indoor / weather
- indoor · rainy-day ok
- Confidence
- Well-corroborated
Getting there: Area: Kabukicho, Shinjuku.
Solo-friendly: Yes — comfortable to visit on your own.
Tattoo policy: Restricted/conditional: an 'experimental' policy — small fashion tattoos may be admitted if covered (cover stickers sold on-site approx 310 yen); large or extensive tattoos can be refused at staff discretion. Confirm before visiting.
Bathing: Gender-separated communal bathing (nude); no swimwear. No private baths. Standard onsen medical cautions apply — those pregnant, with heart conditions or high blood pressure should limit hot-bath time and consult staff/a doctor.
Planning tip: Time needed: 2-4h; overnight lounge stay feasible.
Editor’s note: Reconfirm volatile details (hours, price, closed days) on the official source before launch.