The apartment was great and really close to a metro station and the city centre, and some of the most famous clubs in Berlin were within walking distance from the house but the flat was still really quiet!
The house was new and clean just as shown on the pictures.
Martin was a kind host, we arrived late in the night in Berlin and since he couldn't be there in person one of his friend was waiting for us at the apartment.
I honestly recommend this place, everything was perfect!