We stayed four nights in late September and were very happy in this apartment. I would definitely recommend it as a smart, comfortable option.
For the final two nights we were joined by friends, and Jacopo agreed a suitable additional fee for this arrangement which was really great. He also allowed us a late check-out on the basis that no one was arriving that day. I thought this was really helpful and flexible. Jacopo replied to all communications, both before and during our stay, promptly.
The apartment is exactly as it appears in the photos, and we were met at the door by Davido who was very friendly and waited for us (because we took a wrong turn en route - we should have got a taxi). We found the apartment to be super clean, pretty well equipped, and also very quiet at night which was great. We didn't use the aircon so can't comment on that. The location was great; within easy strolling distance of restaurants and cafes, and no distance at all to the river and the main attractions. I felt almost like a local.
The apartment's private door is up two steep flights of narrow stairs. This wasn't a problem for us, but is worth mentioning in case it would affect other travellers. Also, the wifi was a bit patchy. I didn't have any trouble with it, but two of our party couldn't connect.
Each of the double bedrooms has its own bathroom. One is up an additional flight of stairs, but is the more private of the two.. Overall, a great stay, really glad we booked it. Thanks, Jacopo!