There are 2 Finnish saunas in Hotel Arthur. You may relax at one of the saunas already in the morning or later in the evening after work. Th ere are p rivate shifts for the sauna and the fee is 6 EUR per person. You may book the saunas from the reception.
There are also 2 rooms with private sauna; Sir Arthur Suite in the 7th floor and a unique Art Nouveau-style room in the 9th floor.