My mom and I came to Florence to celebrate her birthday, and Federico and Costanza made sure we had a wonderful time. They made excellent restaurant recommendations (even made a couple of reservations for us!) and helped us find our way around the city. They were so responsive and helpful the whole time and Federico came over immediately late one night when we had a little issue with the shower. They could not have been lovelier hosts.
The apartment itself is so charming, exactly as pictured. It is very small but perfect for two people, and the view from the terrace is simply breathtaking. It was very clean and there was coffee available to start our mornings off right, on the terrace of course. :) The location is beyond ideal--you can't get much closer to the Duomo and not be inside the church. I wouldn't want to stay anywhere else in Florence when I return.