Frank's apartment is the perfect place to stay in Berlin. It is spotlessly clean and he has provided everything that you could need during your stay. The location is great--lovely neighbourhood with lots of shops and restaurants and very child friendly. The S-bahn, U-bahn avd tram are all close by. Frank had set up the cot avd high chair and left some toys for my son, which was very kind of him. Communication and check in was excellent. I would highly recommend a stay at Frank's apartment and hope to visit again soon!