Luca's apartment is very close to Roma Termini train station (2 minute walk to one of the side entrances to the station) and Termini metro stations, so overall it was very well communicated in terms of public transport. There are also many buses coming and going from Termini, so if you plan to move around Rome then this place is difficult to beat. Getting to Colosseum or Vatican could hardly be easier than from such a central point in the city.
The apartment is newly refurbished and was practically pristine and very much spotless when we visited. We had some issues with the Wifi due to faulty power cord, but Luca's brother Emanuele told us they are working on getting a new Wifi router installed soon.
For people with light sleep it has to mentioned that the apartment is on a ground floor in a somewhat busy neighbourhood so noises of partying people going back home, passing night buses, garbage trucks at 2am removing glass containers and such have to be accounted for. This could probably could have been made better if there was air conditioning, but with 23 degrees Celsius outside it was impossible to close the windows as it made the rooms too hot.