We stayed in Zurich for 4 days and had really good experience with Patricia's apartment. Although it was 5 of us (and all girls) we didn't have any problems with space (we used both bedrooms) nor bathroom usage (here, I have to add that bathroom and toilet are separated, which helps a lot). Kitchen /dinning room was a bit cosy but looked new and was well-equipped and organised. The whole apartment was very clean and warm. Internet access was also good.
Our host was very nice, responded quickly to all our questions and gave us some tips about the city when we arrived.
Therefore, we strongly recommend this place to everyone.