We really enjoyed our stay in Berlin and at Roi's apartment! It was spotlessly clean, comfortable and everything we needed.
Unfortunately, we do have one negative - the noise. On the first and second nights next door had the television on ALL night, (it was on from 11pm - 7am). It was so loud, as if having the TV on in our own room and so we could not sleep at all. On the 3rd night we were totally fed up with it - but it seemed to be quieter and luckily we slept.