We could check in three hours before the official check-in time. Staff was very friendly, breakfast extensive and good.
Location is superb, in the quiet and beautiful Vasastan area. The bus to Arlanda Airport stops in front of the hotel, as does bus 57 to the city centre. Alternatively you can take the metro from Odenplan which is a 10-minute walk.
The hotel used to be a factory and the rooms/corridors are noisy, you can easily hear the neighbors.
The room could have been a bit cleaner (there were hairs of previous guests in/on the bed).