I had a great time at Claudio's place. The place was just as described, and had all the facilities to support an enjoyable long-stay, such as kitchen, private bathroom, and washing machine.
The house is a bit far from the city center, but super well connected: It's around 20 min away from the train station . It never took me longer than 30 min door-to-door from the house to ETH zentrum (via 14 and 9 trams).
The house is in a residential area, so it's quite peacufel though you still have access to supermarkets and pharmacies nearby. Being close to Uetliberg was also an advantage if you enjoy walking or hiking.
I didn't have a chance to meet Claudio personally, but he gave me clear instructions to find and access the house. Communication was excellent, and he was happy to help me with my questions about the city, paperwork at the Stadthaus, or even recycling tips. Highly recommended place.