We, family of 5 with three teenage kids, had a lovely stay at this AirBnB. The place was a 15 min walk from Firenze train station (a bit more if dragging luggage through the cobbled streets) so was very accessible.
It is a charming old apartment but met our needs. There was plenty of sleeping space.
The kitchen was fully stocked so was enough to cook meals. The washing machine was also handy.
There were plenty of supermarket around as well.
And within easy walk to all the main Florence sites.
Highly recommend!