Havskuren Spa, Kusthotellet Styrsö

Havskuren is the spa of Kusthotellet Styrsö, a hotel in Gothenburg's car-free southern archipelago reached by ferry from Saltholmen. Its Värmekällan section has a sauna with sea views, a steam bath and cold baths, alongside a self-guided salt spring area and a heated outdoor pool kept at 38°C in winter. Spa visits run in two-hour slots with a 16-year age limit, and day visits without an overnight stay are offered.