Inner Flow Studio is a training and wellbeing club in the Desigual building in La Barceloneta, with a functional spa on its lower floor. The spa has a traditional dry sauna, a steam room, an infrared lounge, a cold water plunge, hydrothermal beds at different temperatures and a float tank. The studio runs on membership, but 90-minute spa circuits for two with a massage are sold separately, from 129 EUR.