Hytte Studios in Hamburg-Eimsbüttel runs guided saunagus sessions rather than a self-led sauna: a gusmester leads 75 minutes of three heat rounds, each followed by a cold plunge, with essential oils, music and rhythm turning the heat into a ritual. Swimwear is worn, the sauna fits around 20 to 25 people, and the whole space can be booked for groups and events. A first welcome session costs €10 and a single drop-in €25.