The house is very clean, and is very close to a lot of tram stations (Englishviestrasse, Klusplatz, Romerhof, Kreuzplatz- the one we use when we go to Zurich HB).
2mins walk to the English-speaking Catholic church. Restaurants and grocery stores close to Kreuzplatz.
Jens also provided coffee, tea, toilet essentials.
The sofa bed in the living room is very large and very comfy. Probably can sleep 3 people.
However the airconditioner that is mentioned is NOT for the whole house. It is only a portable one for the living room. The other rooms are cooled by electric fans. Not a big deal when it is not that hot as you can also open the windows.
Just a note also that you have to climb up some steps to get to the ground floor apartment.
In all, this is a good place for staying in Zurich.