Studio 64

I went there today and it seems to be closed

Small place, few people, none young or hot.

After the beach is finished, but before the parties start, especially towards/during the weekend, this sauna is visited by quite some party boys. 2 floors, quite some cabins on the top floor, nice style and on Ipanema. If you look for the younger crowd (25-38 years old), but don't want to deal with scum, here is a great place.