I rented Alberto's apartment for a month and a half and I can say that I was greatly satisfied with it. The apartment is really convenient with all the essential materials and a great plus: the washing machine is in the apartment. The kitchen is practical and functional as well as the bathroom. The bed and the sofa are big and very comfortable. Another great plus: the balcony with a superb view, which is quite rare in Zurich.
As for the location, I couldn't have found anything better! The apartment is right in the heart of Zurich, 2 min away from a main tram station. There are multiple grocery shops, bars and restaurants nearby, which can sometimes result in lively evenings but it all gets quiet around 10pm. There are also a cinema and a video store not far, for the film lovers like me.
Alberto has been a wonderful host, answering promptly to my messages right from the start and throughout my stay. I can only strongly recommend his apartment and thank him to have welcomed me in it during this summer.