We loved the apartment! Wonderfully decorated and functional. There were 5 of us ( a family with 3 children). It was a bit of a squeeze but it was managable. Robin was a great host!
We found the location of the apartment excepionally good - very close to funky bars, cafes and boutiques, close to a supermarket, close to a tram stop to explore other parts of Berlin. And close to Mauer park which is, in our opinion, a must if you are staying in Berlin on a Sunday - read about it on the Internet or in a guide book! Fantastic experience!