I had spent six wonderful weeks in David's apartment. The equipment is great, everything you need is there and the apartment is only a minute walk from the tramway station, which is great for tourists but also for people who are in Zurich on business.
David offered me to familiarize myself with the area upon my arrival and to show me around. He also answered all my questions very quickly.
In summary, a very pleasant stay - I can warmly recommend David and his accommodation