Video: https://www.youtube.com/watch?v=ua5SlldmQQs
Description: The sauna can only be reserved if you boob the cabin (transformer accommodation) next to this sauna.
At the location:: Hiking Trail, Canoe / Kayak Route, WC, Hut, Outdoor Grill, Sauna, Firewood
Is it free?: > 150€
How much it costs:: 90€ + Cabin fee of 95€ a day
Booking Calendar:: https://kuninkaansaari.johku.com/en_US/transformer-accommodation/bunkkerisauna-2
How to pay?: key box
How to get here?: You need to kayak or take a boat to get here. There is also a water ferry that goes to Vallisaari for 14€ a person. It takes 20 minutes to walk along Kuninkaansaari hiking trail to the cabin. Here is the ferry time table: https://www.frs-finland.fi/vallisaari/
Website: https://kuninkaansaari.johku.com/en_US/transformer-accommodation/bunkkerisauna-2
Region:: Uusimaa
City:: Helsinki
Finnish Names:: Sunnuntaisauna