Just got back from a stay at the AC Firenze. Not much to add to what's already been said except for a couple of items:
1-The easiest way to/from this hotel from the train station is by tram. Fare is € 1.20 and you can purchase at the stops. Only one tram line in Firenze and the hotel is located about 100 yds from Stop #1.
Taxi fares ranged from 8 to 12 euros for our trips.
2- Internet access is free for plats as others have mentioned but you must request it at the FD and receive a Username & Password sheet from them.
3- Email address for the hotel is:
[email protected]
While the hotel is not really near much, I felt the location was fine for exploring Firenze. Staff was friendly and I would not hesitate to stay here again.