This place was a perfect. It's located 5 min walk from the tren station. You can find a perfect coffee place to have breakfast every morning 3 min away by walk. There are plenty of restaurants and supermarkets close to the place.
Richard was very nice all the time. He replies all the questions we had and the check in was very smooth as well.
I highly recommend this place to stay. You can go to the heart of the Berlin city every day without problem.