Betty is an excellent host, always available and friendly! I loved staying at her cute little place which is just perfectly located next to the Duomo! It's not too far either from the bus station where you find the airport shuttle (perhaps 10-15 minutes). Careful if you have heavy luggage, the stairs up to her apartment are quite steep. The walls are thin, there might be a little noise from neighbors but other than that the street is quiet at night and the room is on the back side of the building. I definitely recommend staying at Betty's if you want to feel at home in beautiful Firenze. Great deal for no hassle.