Though we did not get to meet Doerthe (her friend let us in) we had the most fantastic time in her lovely Appartment.
It has everything a family needs, plenty of space, great facilities lovey communal area. It's also in a great location with local shops and super markets round the corner. The district she lives in is great and if your willing to venture and hunt, some great coffee shops restaurants and markets can be found.
If you want a great place for a family holiday in Berlin I recommend.
Many thanks x