Federico's place in Rome is well-situated in the heart of the city. Getting to all the sights was incredibly easy, and there's a fantastic piazza close by for some excellent food. The flat itself is clean and well-stocked. Sounds from the street are easily heard in the flat, and late night party-goers are quite common in the area. Might not be the best for light-sleepers.
Frederico is incredibly responsive to all inquiries and requests. We added another person to our party shortly before the trip, and he made all necessary arrangements. There were also issues with the hot water from the shower. Take quick showers!