Giuseppe's flat is ideally placed near the Colosseo and Foro Romano (5mn walk), the Colosseo metro station and the Termini train/bus station (15mn walk). There is also a supermarket nearby (5mn walk). It is fully equipped, with wifi, AC and a washing machine (although we did not use it). Giuseppe also allowed us to let our luggage in the appartment during the last day before our departure to the airport, which was nice of him.
To conclude, we've had a very nice stay in this appartment (there was enough place for the 4 of us) and we highly recommend it.

N.B.: Beware of being on time with Giuseppe, and if you need to contact him, don't text him, better call him (several days before our arrival, I proposed to inform him of our arrival by sending a message when we were about to leave the airport, he rejected it, as "a teenager-habit"...)