I spent one and a half month in a private room - and I loved it.
Here are some more details:
1) The location is great, I typically reach downtown or the lake in less than 20 min by feet (or tram on a rainy day).
2) I used the room for remote work - the wifi worked fine, the desk in the room was great and the chair comfortable.
3) the private rooms offered are great for people moving to Zurich or staying longer - while there is a small fridge available and a pot and a pan, both Peter and Engin also supported me during my apartment hunt and I was able to find a place really fast - this is clearly above expectations for an AirBnB.
4) If you are around Zurich for a vacation, I can recommend their private apartments with own kitchen&bathroom. They have direct access to the garden and offer a bit more privacy.
Overall, Peter and Engin are amazing hosts. The place is clean, well taken care off, and they will always have an ear for you. I highly recommend it.