The place is nice, clean, the view fantastic and is not noisy, which is a great addition to the location (right in the center of Zurich).
When I arrived I was supposed to pick up the keys of the building gate from a key box in order to check in. Unfortunately, they were not there and the gate was closed. It is likely that another host after opening the gate did not put the key back into the key box. I thought it would have been a problem (it was quite late in the night), but Chris very generously directed me (by phone) to a very nice hotel and paid the expenses. That was great and later everything was perfect.