Federica's flat on Via San Gallo was fantastic! My girlfriend and I stayed there for 5 days and it was a terrific experience. Foremost, the flat is in a great location. It's only about a 5 minute walk from Il Duomo, and it is basically 1 block from Galleria dell'Accademia, where you can see Michelangelo's David. It is also walking distance from the Firenze S.M.N. train station (about 12 minutes walking). The flat itself is spacious and has all the amenities that are advertised. Notably, the bathroom is very nice and the fixtures are very high quality. The terrace was great as well, and has a nice view of the top of Il Duomo. Federica is a very gracious host, she provided some suggestions for restaurants that we were very appreciative of, and also was quick to reply to any questions that we had. Overall the stay at Federica's apartment was very, very good, worth a 5 star rating; we will definitely be staying here again next time!