Fabio and Francesca were out of town when we arrived, and sent some friends to meet us (who were very friendly). The apartment is small (a studio apartment) with a bed, kitchenette and small bathroom. While small, it was all we needed as we only slept and showered there! The apartment is a great location, very close to the Trevi Fountain and a 10-20 minute walk to most large attractions with several bus stops nearby. The internet was a bit slow at times, but we were thankful to have it. Some reviews have talked of the apartment smelling musty, but we found that if you kept the dehumidifier running , emptying it a couple times a day, and the A/C running there was no smell. The hot water in the shower ran out quickly, but we survived. We were able to meet Fabio and Francesca on our last night in Rome - two of the nicest people we have ever met! We were instant friends and have kept in contact since leaving!
*If you are looking for a place in Tuscany, Fabio and Francesca also own La Casina delle Ginepraie. We did not stay overnight there, but visited and it is magnificent! The views are beautiful, the pool is refreshing, and the house is amazing! (We cannot technically review it on airbnb.com since we haven't officially stayed there)