The apartment is located in a quiet region, in a wonderful old house and as such gave us kind of cosy feeling from the first moment. The public transportation in Zurich is excellent, so it is really easy to go everywhere and any time from this place.
We stayed for a week with family and the place felt like home for us. Everything we needed was available, kitchenware, washing machine, etc. The instructions for shopping, garbage handling, etc. were left for us on table and these were very helpful and informative. The apartment is much larger than we expected, basically 4 rooms + kitchen + bathroom. All walls are covered by paintings and drawings.
Overall, staying in Sandra's apartment made our stay in Zurich a lot more enjoyable than we expected.