The apartment is terrific and located in what I think is the best area. For six people, three couples, the size was perfect and the dining/living room was a great meeting area. The air-conditioning was a pleasure as well, as it got really hot mid-week. All the great sights are in walking distance - we walked everywhere - Pantheon, Piazza Navona, Trevi Fountain (still under construction) and Spanish steps, Trastevere, etc.
Nicola is a wonderful host and the apartment listing really reflected what it looked like. All the food recommendations he leaves are wonderful. And Carlito, who picked us up from the airport and dropped us back on our return, was great.
If I could I would have stayed there another month I would have.