Myself and my two travel companions had a lovely stay at Susanna and Sandro's property. The apartment was very homely and comfortable, and Susanna and Sandro went to great lengths to ensure we had a good stay, including leaving a map and suggestions for places to eat and shop (Pizzaiuolo in particular was very delicious and only a block or two away!). The location is an easy walk from The Duomo, Ponte Vecchio and really most of the big attractions in Florence.
In summary, a great place in a great location in a great city hosted by great people. Thoroughly enjoyed our time there!