My family had a wonderful month-long stay in the flat, despite a few problems (broken furniture, heating issue) at the beginning. Michel was incredibly helpful; he responded right away, stayed in regular contact and sorted everything out immediately. What more can you ask? He is also a lovely person!
The flat itself is beautifully decorated, cosy, comfortable and full of light. Everything you need is there, as well as the extra bits that kids may need. We got our exercise on the stairs (3rd floor) - my 7 year old was fine, but the 3 year old moaned about it.
The area is wonderful one for families - plenty of kindercafes and playgrounds in walking distance. It's also convenient for transport and is only a short journey to the city centre. The Kollwitzplatz itself has markets on Thursday and Saturday which are great. Daily shopping is easy with a local grocery store only 5 min from the door.
I can't recommend it enough - we would happily return and hope to do so in the future. Michel is a wonderful host!