The apartment was perfect. Exactly what we were expecting.
Its right next to U-station which connects you with everything in the center. Also a big number of take outs, bars and markets nearby make us to highly recommend this apartment. Moreover, you can even get by foot to many of the landmarks in Berlin, which also makes this a very good place to stay at. The people at the reception are always very nice and friendly. So, don't hesitate to book the apartment.