Our stay in the Alessandra's flat was very nice. We met Alessandra at the check in. She was very welcoming and she helped us to find a good place to park our car.
The apartment is well furnished. We had everything needed.
The location is ideal. The Santo Spirito place is nice and there are a lot of good restaurants.
The city center (Duomo, Piazza della Signoria, ...) is reachable by 10 min by walk. Very convenient.
To summarise: the apartment is perfect for a trip in Florence.