Unfortunately the hotel is not as it is advertised. The description states that it is in Mitte, and unfortunately it was very far away from the said part of the city. Bus connections are ok, and the area is fine (kind of industrial) but I wish we knew that in advance... The pictures are very nice, but the hotel was a bit old and rundown, especially the lounge area. Note, that they only have a reception between 6am and 10pm, so if your flight is delayed, etc, there is no way you can get in.
The wifi is just ridiculous, could not even load Google Maps, and you had to pay for extra connection, which frankly seems unfair, given that the hotel was 80-90 euros per evening.
The staff was nice, and was trying to be helpful, but I wish they would update the location on the map. Also, the rooms were clean, which is guess is positive.