Our family of 6 (5 adults, one infant) thoroughly enjoyed our recent stay at Antonio's apartment . There was plenty of room for all of us - without feeling crowded in any way. Everyone liked the homely feel , comfortable furniture and quirky features.. Although it faces (at the front) a busy street, we had no issues with road noise.
Overall the apartment was larger than we had expected.
A very interesting neighbourhood - very handy for public transport and loads of options for quality food in local restaurants and cafes. Enjoyed our breakfasts in the cafe directly downstairs.
We would return to this apartment on our next visit to Berlin.