I was very pleased with my stay with Sebastiano and Giulia (And Mimi), they were terrific hosts. They answered all my questions without hesitation. The apartment was nice with very spacious terrace. It was located outside city center, but walking to the apartment wasn't so terrible, it's around 30 minutes walking distance from station. There is a bus stop nearby that runs right to the Train station, which was very convenient because the station is really close to center of Florence. There might be some disturbance from the sound of train as the apartment is close to the train station, but it doesn't go on evenings so it is not of any disturbance during the night. I recommend to go for lunch to a restaurant that Giulia recommended, it's called The Boutique della Pasta Fresca, which offers fresh pasta for very good prices. That for me was a delight.