We stayed for 4 nights at Carolina and Ramfis's place with 2 teenagers.
I knew the area was a great base for exploring Berlin but wasn't sure about the lay out. I shouldn't have worried as it was briliant. One of the better Airbnb's we have stayed in.
It is much better& bigger then in the photos. Our daughter decided to sleep in the large hall area, our son in the living room with the telly and the parents in the massive bedroom.
Kitchen is well stocked and the flat is generally a nice place. Kastanien allee is such a diverse street. Great food at Der Imbiss and also La Focacceria on the Fehrberliner strasse which does pizza by the slice is a must, opposite the park.
Check in &out all very smooth.
I would really recommend this place.