Balance House

Balance House is set up around private rooms, so you get the sauna and cold plunge to yourself or with a friend instead of sharing with a crowd. A typical 60-minute booking lets you cycle between heat and cold at your own pace, with red light therapy available as part of the visit.

It is a good fit if you want a quiet, self-guided contrast session in central St. Pete. Book ahead, since private rooms fill up, and bring a swimsuit and water.