We had a pleasant stay at this place. The room was very clean, spacious and has access to the patio.
Parking was possible nearby in the street (1€ per hour from 8-20). The place is a bit outside the center but you can get there easily by tram or on foot (30 min walk).
Anna and Giovanni are very welcoming and provided tipps for restaurants and sights. We even got a discounted breakfast in the café at the corner as guests of Anna & Giovanni.
All in all it's perfect and we would come back when in Firenze.