The sauna at The Spa at Four Seasons Hotel at The Surf Club in Surfside, Florida is part of a luxury spa facility that includes both sauna and steam rooms in the women's changing area. The spa offers a high-end experience with amenities including hammam, relaxation lounges, and complimentary prosecco and tea service before treatments. While the spa is primarily known for its massage services and treatments, the thermal facilities serve as complementary amenities that enhance the overall wellness experience.