My girlfriend and I stayed here during our trip to Zürich. The host was extremely hospitable, and she stayed in constant communication with us leading up to and throughout our stay. Check-in was very easy, and we were provided detailed instructions on how to retrieve the keys well in time before we arrived. The building is very secure as there are two doors you have to unlock with a special key provided as well as a lock on the apartment unit itself. We felt very safe. Although the room specifically is a non-smoking room, the building is not. It was a little unfortunate to walk through the halls that smelled like smoke, but once in the room you can’t smell a thing. You’re right near the street so it was quite noisy, and with no A/C you have to decide between the noise or opening the window. With the window closed you can’t hear a thing, though, and there is also a fan provided in the room. There are 2 tram stations 300m in either direction which you can ride and get anywhere within the city for fairly cheap! We really enjoyed our stay here while in Zürich, and we were so satisfied because of how friendly and hospitable the host was! I would definitely recommend this unit.