Sonja's place is great, nicely decorated and well illustrated in the photos. She was flexible with my check-in/-out times. I felt very much at home away from home, and thanks for the nice tea and coffee!

The flat is located in a very nice neighbourhood that is clean and quiet. Yet the location has plenty of nice local shops/eateries, and is very convenient with good transport links for tourist attractions, in particular those in the East side of the city (10mins from Alexanderplatz). I highly recommend Sonja's place and I would stay here again if I visit Berlin.