We had a great stay in this lovely little apartment. It was clean, bright and had everything we could need. Friederike is a friendly, helpful and responsive host. The apartment is in a quiet, pretty residential area and the shops and S-bahn are about a 10-15 minute walk away.
Rolling a suitcase to and from the S-bahn is not fun due to the amount of cobblestone/uneven pavements (this is very common for many areas of Berlin) so if anyone has a lot of luggage I would perhaps take a taxi or something.
Overall, we had a very enjoyable stay and we would stay here again.