We had a wonderful stay at Kevino's place. The apartment is super cute, clean, safe (keys to enter the building + doorman + keyrs to the apartment) and well located. Roma district is safe, chic, with lots of small coffee shops, not too far from attractions. We walked everywhere from there (we love walking, everything was within a 20- 60 minuted walk even the historic district and museums). The rooftop is a nice +, as you can sit there and just enjoy life.
Kevino's always answered quickly and was quite accomodating (as our arrival flight was 3h delayed and we got to the apartment late). We met him just before we left and he was very nice.
On the downside, I would say that the bed was not that comfortable and that it is in a room located on the street side. It was pretty loud outside (singers, street vendors) but tired like we were after a long day of visiting, it didn't stop us to have a great sleep.
We highly recommend the place