Staying at Giulio's place was wonderful. He was out of town so we met with his father, Roberto. They were extremely responsive to messages and Roberto was extremely flexible with our arrival (which changed at the last minute due to some travel problems). The building was sometimes a little noisy in the morning so I'd recommend ear plugs if you are a light sleeper. Other than that the apartment is beautiful, the location is perfect, and I would definitely recommend Giuolo's apartment if staying in Florence.