We have a garage under the hotel. It cost 115SEK/day 245SEK/night and 185SEK/night on the weekends. There is also alot of parking places outside the hotel.
Appr 25 places also on ground outside, same price. Safe area for parking outside. Parking can be full in case there is a fair ( a few hundred meters to the exhibition center. Opalen is very popular for exhibitors staff )
Get an answer from Scandic Hotel Opalen staff and past guests.