We stayed here for 4 nights (was meant to be three but BA cancelled our flight due to the weather!). The hotel is in a great location, very easy to get around and with lots of shops, bars and restaurants nearby. The rooms are clean and tidy and although it would be nice to have the bathroom in its own separate room, it provided just enough privacy! We had a room with a great view.
The staff on reception were excellent and really helpful. The breakfast did the job, although on our final morning we had it in the restaurant near reception which was a much nicer experience than the other restaurant a couple of levels up.
One minor niggle is the lifts can take a while but it's a large hotel so you can understand. Overall a great base to explore Berlin.More