Luca's apartment is well located and served us well. The coliseum and most downtown sites are at walking distance, and a bus station nearby serves all other sites.
It is very clean, has all you need in the bedroom, kitchen and bathroom, and it has a great view. In the fall time, it was a delight to open the windows and enjoy the views and weather.
The apartment is very spacious for 2 people, but may be a stretch for 4. I was there with my wife so this was not a problem at all.
The street and the upstairs neighbors were definitely loud at night, which affected my wife somewhat (light sleeper). I slept through the night without issue.
Luca is a great host, always communicating with us and making out stay enjoyable. He had guide books, literature books, maps, suggested tours and restaurants, and many other little tips and suggestions right in the apartment available to us.
I would definitely stay in Luca's apartment again !