Claudio's place is perfectly settled in the midst of Florence. Over our stay, my wife and I made a ritual of breakfast/coffee at Cafe Mario (across the piazza from the beautiful Santa Croce) and lunch at Due Fratellini (a cheap but amazing sandwich shop, which Claudio recommended!). Both were within a few minutes' walk.
Having a washer was a godsend in the midst of a 2 week trip. The apartment has every amenity you could wish for, which is very nice in the middle of a chaotic city!
Of note, as others have mentioned, the apartment is high up - but we took that as a daily justification for gelato.
Overall, it was a wonderful stay, and we will definitely come back should we ever be in Florence again.