The apartment is great - freshly innovated, clean and bright. 2 separate bedrooms and 2 bathrooms, really convenient. The location is perfect, in the heart of Rome - at walking distance from all major sightseeings. We did not use any public transportation for 4 days in Rome - you can visit even the Colosseum and the Vatican on foot. Trastevere is very close also and Campo de' Fiori is just around the corner, you can buy amazing fresh products there. Ilia and Fabrizio are very nice and kind hosts, they welcomed us and advised us about the city with useful hints. They also organized transportation from the airport for us, very nice one.
I would gladly go back there if I visit Rome again. Thank you very much, Ilia and Fabrizio!