Sannan sauna is a small seaside sauna by the Vuosaari public beach, run by the Vuosaari-Seura society. Weekly public sauna evenings run from 1 May to 29 September 2026, Tuesday to Thursday from 4 pm to 9 pm, with no booking. Seven to nine bathers fit on the benches, women and men have their own changing rooms and bathers swim from the pier. There is no shower, only a warm-water basin. In winter the building is a changing room for winter swimmers with no sauna. Private hire costs EUR 220 a day.