I stayed 4 nights at Anna's apartment and it was perfect! As the whether got very cold in Zürich with lots of snow, Anna's apartment was so cozy and warm, that I did not want to leave it in the morning ;-) Also the transport connections are very good, with a bus station just 2 minutes from the apartment, and only one bus station to Kunsthaus! Check in was very smooth, Anna was so flexible and waited for me until I came in the evening after work. She explained and showed me everything I needed to know. She also had the fridge fool of delicious food, that I could eat ;-) The apartment was extremely clean and comfortable. I felt myself very welcome in Anna's apartment. Check out was also very easy and simple organized.
I would definitely recommend Anna's apartment for short visits to Zurich.