Hotel had large rooms for Germany with all the modern conveniences one could want...except for air conditioning. We stayed in a room called Checkpoint Charlie. It was very nice, up many stairs, and located very close to the Sans Souci and only a few minutes from downtown. Breakfast was included with our stay and it was a great spread. I found some of the staff were very friendly, others just okay. I have marked the hotel as pleasing overall, with slight reduction for hotel staff (pleasing but not excellent). The hotel facilities were nice, but I have reduced to pleasing as there was no elevator or easy way to get our bags up the 3 flights of stairs to our room. Finally, as noted above there was no air conditioning, only a fan in the room. It was 28-30 celcius while we stayed in Potsdam, and an a/c would have been appreciated. Had it not been so hot (or if you are traveling any time other than in the summer) I would have said the room comfort was excellent.