The apartment looks like on the pictures, it was very clean and new. The location was excellent, it doesnt get more central than that, with Ponte Vecchio just 100 meters down the road and Piazza dellla Signoria 100 meters in the other direction and Duomo maybe 400 meters away.
Getting there by car is rather difficult, i suggest you arrange a parking at the Garage delle Terme which is around 200 meters away in Via delle Terme, friendly team, car available within 40 minuntes when needed, 25 EUR per night. Theres a good grocery store just across the Ponte Vecchio on the left side. For families with kids it might be a bit loud at night, other than that its a great place to stay. Book your Museum Visits in advance.