Onsen SF
466 Eddy St, San Francisco, CA 94109
- Price
- $50 per visit
- Access
- Communal
- Session
- 2 hours
Details last checked
Onsen SF is a Japanese sento-style communal bathhouse near San Francisco's Tenderloin, with a shared hot tub, a redwood sauna, a steam room, and an overhead cold plunge. A soak is $50 for a 2-hour reservation capped at four guests, with rotating single-gender and co-ed bathing days through the week. Children under 18 are not permitted in the bathing area, and cancellations or no-shows inside 24 hours are non-refundable.
Details
The date beside each detail is when we read it on the studio's own site — tap it to see the page.
- Access
- CommunalSource for access, captured Aug 16, 2026
- Shared sauna and plunge areas used alongside other guests.
- Session length
- 2 hoursSource for session length, captured Aug 16, 2026
- Phone
- +1-415-441-4987
Before you go
- Gender and days
- Monday is a men's session, Wednesday a women's session (both bathing-suit optional); Thursday-Sunday are co-ed with suits requiredSource for gender policy, captured Aug 16, 2026
- What to wear
- Required on co-ed days; bathing-suit-optional on single-gender daysSource for swimwear policy, captured Aug 16, 2026
- Minimum age
- 18+Source for minimum age, captured Aug 16, 2026
- Cancellation
- 24 hours' noticeSource for cancellation policy, captured Aug 16, 2026
Pricing
- Per visit
- $50Source for per visit, captured Aug 16, 2026
How it compares in San Francisco
Its $50 per-visit price sits above the San Francisco median of $47, across the 6 studios here that publish one. It does not publish a plunge temperature (3 of the 23 San Francisco studios we track do) — worth asking when you book. Communal access puts it with 5 of the 18 studios here that state a model; 5 do not say.
The state of cold plunge in San Francisco →What they offer
Hot and cold in one visit: contrast therapy in San Francisco →
Location
466 Eddy St, San Francisco, CA 94109
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Questions about Onsen SF
- Does Onsen SF have a cold plunge?
- Yes. Onsen SF lists a cold plunge among the facilities on its own published pages, checked Aug 16, 2026. It does not publish a water temperature, so we do not list one — check with the studio if the exact temperature matters to you.
- How much does Onsen SF cost?
- Onsen SF publishes a single-visit price of $50, read from its own pages on Aug 16, 2026. Prices change without notice — the studio's own booking page is the live figure.
- Is Onsen SF private or shared?
- Communal. Shared sauna and plunge areas used alongside other guests. Checked Aug 16, 2026.
- What else does Onsen SF offer besides the cold plunge?
- Its published facilities in San Francisco also include traditional sauna and steam room, checked Aug 16, 2026. Availability of individual services can vary by session type and time of day.
For the studio
Own Onsen SF? Corrections and updates are free — update this listing. Visitors we send you arrive tagged utm_source=findsaunaplunge, so you can count them in your own analytics.
Cite this listing
Quote any of this freely — we ask only for a link, and that you keep the date with the figures.
FindSaunaPlunge, “Onsen SF, San Francisco, CA”, checked Aug 16, 2026. https://findsaunaplunge.com/venue/onsen-sf-san-francisco-ca/