We had a great 3 night stay at Federica's. The apartment was exactly like the photos. It was very warm in Florence, so we really enjoyed the apartment's features of the balcony with roof top views across to the Duomo and Market, the air conditioning, and the high quality bathroom/shower.
Within 10 minutes walking you are right in the heart of the historic city, so an ideal location for exploring, but a very quiet, peaceful apartment.
Sharon was really helpful in greeting us when we arrived (slightly early) and gave us a great introduction to the city.