This is not a great hotel, and less convenient to the metro than one would expect, but it does have its plusses. The rooms are rather cramped, and include more beds than needed or requested, wasting even more space. The noise from outside is considerable. There is no refrigerator, and the safe is quite small. The bathroom is sufficient, and well designed, though the shower hook doesn't quite fit the attachment.
The beds are quite comfortable, and the breakfast is excellent with great variety, good quality and an attentive staff. This is the best part of staying here.
The wifi however is not secured, so many pages refuse to load on my tablet. There are no English language Tv stations available, unlike every other hotel where we have stayed during our seven weeks in Europe (and 14 hotels). One thus can't even get the news.
This hotel, even at the lower end of options in Berlin, is still expensive, and Berlin is one of the least interesting cities we have visited on this trip.