Overall, we (My girlfriend and me) had a nice stay. For two people, the room is just big enough, if you are alone it is perfect. The rooms are clean and nicely furnished (with a coffee machine and free capsules). The hosts, Peter and Engin are really welcoming and super friendly.
The negatives are of course the price (not unusual for Zurich), a super small kitchen without any space to cook and without a table to eat on, only one shower for 8(?) guests (although a second one is being constructed) and sometimes insufficient cleanliness (mostly caused by other guests).
But then again, the hosts friendliness makes up for almost anything.