Sauna City Guide

Onsen SF

San Francisco

Bathhouse

A Japanese-inspired communal bathhouse in the Tenderloin with a redwood sauna, a steam room, a cold rain shower and a 15-person soaking pool, plus a small restaurant for a meal after the bath.

More about Onsen SF

Visits are two-hour reservations, booked as co-ed, men's or women's sessions. Swimsuits are optional in the gender-specific sessions and required in the co-ed ones. Robes, towels, sandals and bath products are provided, and herbal tea is on hand between rounds.

The soaking pool sits under a skylight at around 104°F, and the cold rain shower takes the place of a plunge tub. Unlike many traditional bathhouses, quiet conversation is fine. A bath-and-dinner option pairs the session with a seasonal set menu.

At a glance

Onsen SF has a Finnish sauna and a steam room, plus a cold shower but no cold plunge. A session costs $50 for 120 minutes. Swimsuits in co-ed areas, nude in single-gender areas and booking required.

Saunas
Finnish and Steam room
Cold plunge
No, showers only
120-min session
$50

Saunas

  • Finnish (dry)Temp not listed
  • Steam roomTemp not listed

Hot pools

Cold

  • Cold shower or bucketTemp not listed

Before you go

Swimsuit
In co-ed areas; nude in single-gender areas
Co-ed
Co-ed and single-gender areas
Booking
Required
Towels
Included
Food and drinks
Available

Separate co-ed, men's and women's sessions, prepaid via Tock. Bath + Dinner is $120. Prices checked October 2026.

Getting there

466 Eddy St, San Francisco, CA, 94109

Frequently asked questions

How much does Onsen SF cost?

A session at Onsen SF costs $50 for 120 minutes (checked October 2026).

What kind of sauna does Onsen SF have?

Onsen SF has a finnish (dry) and a steam room.

Does Onsen SF have a cold plunge?

Onsen SF has cold showers but no cold plunge pool or tub.

Is Onsen SF co-ed?

Onsen SF has co-ed areas as well as single-gender areas.

Do you need a swimsuit at Onsen SF?

Swimsuits are required in the co-ed areas at Onsen SF. The single-gender areas are nude.

Do you need to book Onsen SF in advance?

Yes, Onsen SF requires a booking.

Nearby

Sources

We last confirmed Onsen SF is open in October 2026. Spotted something out of date?