We had an excellent stay in this apartment. The location is perfect, next to a main train station and a tramway stop, so it's very easy to go anywhere in Berlin, but not directly in front of it so you don't have any noise.
There is a lot of very good restaurants in the streets nearby. Also there's a bid supermarket at walking distance so you'll find everything you need to prepare your own food.
The apartment itself is very comfortable, quiet and spacious.
We'd come back anytime if we plan another trip to Berlin!