Silvia and Giorgia's apartment is a ten minute walk from the SM Novella station, ten minute walk from the Duomo area, and less than a twenty minute walk from the River Arno. It could not be in a better location for strolling around Florence, which helped make my first visit to this city truly unforgettable.
As for Silvia and Giorgia, they were more hospitable than we could have imagined. Silvia met us at the train station to walk us to the apartment, then she took about ten minutes to let us know where to eat, shop, visit, and party. We had very open communication with Silvia and Giorgia throughout our stay.
I imagine you'd be hard-pressed to find a more valuable apartment to stay in for your next visit to Firenze. Highest recommendation!