Rooms so small I had to upgrade to avoid feeling claustrophobic. Then on the last day, card got blocked 2 hours before check out, needed to make multiple trips back and forth between the room and the reception before i could get inside the room. Then when I asked for late check out because of the whole card key fiasco, they charged me 200 SEK extra!
Very basic hotel, am surprised it is a four star. No tissue paper, no mini bar, no room service, room did not get cleaned as promised. This is probably my worst experience in a hotel (note that I actually upgraded to the best possible room)