Nicoletta's place is very pretty and conveniently located. I especially loved the bathroom which was spacious with a great shower. It was clean. You can walk from the train station in about 10 minutes. Sights such as the Duomo and Santa Maria Novella are all walkable. Please note, although it states the flat is on the 1st floor, you will still need to climb a flight of stairs to get there.
If you have heavy suitcases, keep this in mind. We enjoyed our stay very much.