Our two day stay at Fernando&Frederico's apartment was ideal. It was centrally located to what we wanted to do and see in Florence and all easily accessible by foot. We took the train into Florence and then walked five minutes to the apartment where Carlo was waiting for us. He was so welcoming and enthusiastic about his city, opened a map and gave us a quick tour circling all of his recommendations. We had tickets to go see the David and needed to get going but Carlo insisted on bringing us across the street for a quick expresso - such a kind gesture.
The apartment was clean and the bed was very comfortable. There is a bar across the street and the windows face out to the street but we ran the AC at night and wasn't bothered by it at all. It's no different than being in any other city - you often hear the bustle of city life. Wifi worked great too. Of note, also situated just several blocks from rental car agencies (Hertz, Avis, Europecar) which was convenient when we left the city by rental car. Highly recommend this apartment for a trip to Florence.