Rokka Studio is a small cold-and-heat recovery studio on Carrer de Muntaner in Sant Gervasi, named after the Japanese word for hexagon. It pairs a dry sauna and a full-spectrum infrared sauna with cold plunge baths and a relaxation area. Single sessions run 45, 60 or 90 minutes at 30, 42 and 58 EUR, occasional guided breathwork sessions combine plunge and sauna, and the whole studio can be booked privately for an hour at 250 EUR.