We stayed in Federicas apartment for five nights and had a wonderful time in rome. Though its not directly in the city centre, you can easily get to all that touristic spots, like the colloseum, forum romanum,... by taking the tram 8 (~20min). For us it was a thankful experience to live in a quarter (which is called monteverde by the way, next to trastevere), that is not as loud and busy, as the other parts of rome. Federica herself was a very nice host. She told us about her favourite 'secret' spots in rome which was quite helpful. The first day we had a problem with the warm water. It took her just a few moments to come over and fix it.
All in all I highly recommend Federicas apartment when you want to experience rome for a few days!