Found the hotel to be fairly good with comfortable beds and a decent shower. We had a room at the back of the hotel and found it to be pretty quiet considering the hotel is on a main road. All the staff we met while staying there were very helpful and the twin room was clean although quite small. The only downside was that one of the two lifts was out of service throughout our stay.
Having the u-bahn right outside was really handy and it was an easy journey into central Berlin.