I really liked this hotel.. the outside, the lobby, the bar.. the halls.. the staff, everything.
The rooms felt like you were in the set of Star Trek ! but in a good-chic-nice way..!
Maybe a little bit far from all the action.. but we never took any transportation while in Florence.. 20-25 mins walking to the center.. or anywhere in Florence..
The only negative is that they kind of charge for everything ( bottled water in room, wi-fi, etc)
The breakfast was very good..
Ask directions for Napo Leone.. one of the best meals we had during our Europe trip..
I would definitely return to UNA..