The appartment is in an amazing location for a trip to Florence - about 5-10 mins walk from the station and 5 mins from the river and city centre. Tommaso is an excellent host, who met us and gave some EXCELLENT suggestions at the beginning of the trip and was always at the end of the phone for any problems/help that may be required. A couple of welcome gifts in the appartment were also lovely.
The appartment itself was clean and well equipped. It isn't huge (35 m2) so I'm not sure you'd want to be in it if you were four rugby players, but for us (a couple) it was a good size. Though the apartment is on a fairly main road the windows are excellent at keeping out the noise so it won't disturb your sleep. As it is Italy (and we were there in the summer) it was warm, but Tommaso kindly supplies fans.
The kitchen is perfect for making tea/coffee and for having breakfast, but it is quite small - but you're in the centre of Florence so you'll be wanting to go out for dinner so it is not a problem at all (especially with Tommaso's suggestions).
All in all a nice little place to stay for a short city break as a couple!