We stayed there in April and the flat was wonderful! Clean, comfortable, feels like home, has a very authentic Rome courtyard. The Colosseum is quite close, as well as the metro stations. We arrived a couple of hours earlier and Maurizio arranged an earlier check-in for us so we had more time in Rome because of that. He also provided lots of information and was in contact with us for our whole stay. He is very nice and helpful, very friendly and welcoming. The flat has lots of the utensils you may need during your stay, it feels extremely safe and cozy. There are lots of books and films in the flat, and a Roma guide. Wi-fi was also great, had no problems with anything.
Grazie mille, Maurizio!