You can't beat the location of this apartment. It is around the corner from the Palazzo Vecchio, a few blocks from the Uffizi and the Ponte Vecchio, and there are restaurants and shops everywhere. It is about a 15-20 minute walk to the train station. It is quite spacious, and the kitchen was well-stocked with cookery and utensils, etc. The rooms were also nice, and the rooftop terrace had a lovely view - we enjoyed sitting out there, even though we were there at the end of December. It is a very busy area so there will be late night revelers and some late night street noise.
Francesca has many instructions and information posted throughout the apartment, and everything is very straightforward. She was also very responsive to our questions (we asked about the closest grocery store, for example). We appreciated the self-check-in option as well. We would warn - the steps are serious. We knew about them, but it was still three flights of very steep steps to carry luggage up and down. Not a big deal for our entire trip, but if you were to have a young child or a stroller with you, this may not be the place for you. Everything was clean, and we especially appreciated the easy-to-use washing-machine. Definitely recommend this apartment. It was more than enough room for a family of three, and we were quite comfortable.