We landed at Zurich airport at 10.30 p.m. and got to the Seestrasse Apartments Drei Koenige at 11.00 p.m. and had to got to the Hotel Ascot, 5 minutes from the Apartments to check-in and get the keys, information that was not available when I booked nor communicated to me ahead of the trip.
The apartment we had was clean but is right by the street and even though not really noisy, still not very well isolated soundwise, so you can hear the traffic (Tram & cars). It is not a serious issue but when you travel for work, it matters. Overall, the stay was fine. Yet I can't stay it was great.