Lovely place, feels like home, great location, next to tram station and Freibad Letzi. Has most things you might need for your stay (kitchen, hoover, tools, etc.)
Neighbours can be a bit noisy, but generally its fine.
Communication with David is quick & easy, he is really helpful. Internet did not work well, so he adjusted his contract and made sure a better connection is available etc.
If you stay there and plan to do home office on a daily basis, you might wanna speak with David about an additional table, as the kitchen sitting area is not ideal for that.
As most flats in these kind of buildings, it can get very warm on warm sunny summer days. "Luckily" we have not so many of those in Switzerland ;)