We thoroughly enjoyed our stay. Costanza responded quickly and assisted us in arranging transportation via private car from the airport. The driver she recommended was friendly and professional and provided us with useful recommendations of restaurants and sites.
Constanta met us at the apartment even though we arrived in late evening due to a missed flight connection. She was so friendly, and spent 30 minutes marking recommended supermarkets, bars, restaurants and sites on a map. We tried several of her suggestions (Osteria della Suburra; Enoteca della Ferrara; Basilica of San Clemente) all of which proved excellent.
Apartment was very close to Cavour metro and Colosseum.