Seattle

For a private suite with a plunge, City Sweats (Wallingford, West Seattle, Bellevue), Float Seattle (Fire & Ice), and Space B.A.R. in West Seattle. For beach heat and open water, Bywater Sauna and Sauna Moon at Alki. For a bathhouse circuit, Banya 5 in South Lake Union, Soak & Sage in Renton, and The Ladies Room in Greenwood. For a private thermal circuit for two, Circle Wellness in Fremont. For a whole-spa group rental, Hothouse Spa on Capitol Hill.

We prioritize studios with clear heat plus cold. Most live listings pair sauna or infrared with immersion plunge or open water. Sauna Moon, Bywater, Wild Haus, and Good Day are open water cold, not filtered tubs. Hothouse and Seattle Sauna are labeled as cold shower contrast, not immersion. We do not list float-only, massage-only, or yoga-only rooms as contrast.

Float and City Sweats are private and filtered. Circle Wellness in Fremont is a premium private thermal circuit for up to 2 guests (WellPod sauna, cedar soak, cold plunge, riverstone bed). Space B.A.R. offers communal outdoor traditional contrast and private infrared suites. Banya 5, Soak & Sage, and The Ladies Room are communal bathhouse or silent-spa circuits with plunge pools. Sauna Moon, Bywater, Good Day, 815, and Wild Haus are outdoor or floating. Hothouse is private rental with shower contrast; Seattle Sauna is dockside shower contrast. First timers often start private; beach and open water are the Seattle ritual once you are ready.

From our studio notes: Sauna Moon Alki $35 for 60 min / $20 for 30 min ($100/mo unlimited); Good Day packs from $99; Bywater weekday/weekend sessions ~$35-$40; Seattle Sauna from ~$49; The Ladies Room Spa Pass ~$60; Space B.A.R. communal or private contrast $60 to $70; Banya 5 2-hr entry $70; Soak & Sage in Renton 2-hr pass $75 weekdays / $85 weekends; Float Fire & Ice $79; Hothouse private rentals from ~$190; Circle Wellness private thermal circuit $225 to $295 for 1 or 2 guests. City Sweats skews membership Pricing. Confirm live rates before you book.

No. Most spots sell singles, intros, group hourly rates, or packs. Sauna Moon also publishes a $100/mo unlimited. Memberships help at City Sweats, Float, Space B.A.R., or Banya 5 if you go weekly.

Thin. On our last check Seattle had no confirmed ClassPass yes for true sauna plus plunge. Treat ClassPass as a maybe only if the app shows a live credit, and expect to book most sessions direct.

For filtered immersion, book Float Fire & Ice, City Sweats, Circle Wellness, Space B.A.R., 815 Refresh, Banya 5, Soak & Sage, or The Ladies Room. Sauna Moon, Bywater, Good Day, and Wild Haus use open water. Hothouse and Seattle Sauna are shower contrast only. Know the site rules and your limits before you book open water cold.

Float Fire & Ice for multi-location private infrared plus filtered plunge. Greenwood / Green Lake are the primary Seattle Fire & Ice pins; Float Bellevue and Renton Landing are the same Fire & Ice product on the multi-location page, not a separate Bellevue city hub. City Sweats Wallingford on Stone Way for north-end private suites. City Sweats West Seattle on Fauntleroy for Junction access. City Sweats Bellevue on Bellevue Way for Eastside private suites. Circle Wellness near Gas Works for a premium private thermal circuit (max 2 guests). The hub compares formats; each studio page is where you book.

City Sweats Wallingford on Stone Way for north-central private infrared + plunge. City Sweats West Seattle on Fauntleroy / Junction when that corridor is closer. City Sweats Bellevue on Bellevue Way NE for Eastside / Bellevue access. Same private-suite format; memberships redeem across all three, so pick by drive.

Banya 5 in South Lake Union is the in-city pick for parilka heat, steam, and a plunge pool ($70 for 2 hours). Soak & Sage in Renton is the bigger social circuit, with a cedar sauna, temazcal, steam, a 104F thermal pool, a 45F plunge, and a snow room for $75 weekdays or $85 weekends. The Ladies Room in Greenwood is the quiet, women-forward silent spa (All Gender Wednesdays welcome men).

For outdoor private groups near Green Lake / Roosevelt, book 815 Refresh. For wood-fired beach communal with open-water cold, book Sauna Moon on Alki (Thu through Sat, $35 / $20) or Bywater at Alki Beach or Golden Gardens (seasonal sites vary). For locked indoor suites, book Float Fire & Ice, City Sweats, or Circle Wellness in Fremont.

A studio is usually a timed private or small communal contrast room. A bathhouse is a day-pass multi-room heat and cold house. A banya is a Russian or Ukrainian-style wet or dry bathhouse. A jjimjilbang is a Korean spa with heat rooms and cold pools. Confirm format on the venue site before you book.