Room was 'tired' with marks on the walls and carpet.
My room opened directly onto an uncarpeted stairwell, where the sound echoed making it noisy.
Housekeeping opened and left open the room window every day - when it's -2 outside this means the room was very cold when I got back after a a long day.
On the positive, the bed was comfy (although it would have been nice to have a duvet that fit the bed) and the bathroom clean.
The hotel is a short walk to Theresienwiese U-bahn, or a 10 minute walk to Hauptbahnhof, so a good location.