Moritz's place is a great place to stay in Berlin, it is just steps away from the S-Bahn (train that goes underground and overground). There are also trams that pick up passengers practically right outside the apartment, so getting around Berlin will be easy if you don't have a car.
The apartment had a nicely equipped kitchen, comfy bed, and the shower had awesome water pressure! Moritz is super nice and accommodating to his guests and I would highly recommend to travelers interested in a Berlin adventure!