Perfect location and super accommodating hosts!
I was in Florence for 4 days for work and was very happy at Mappe mondo. Sara's apartment is perfect. Nicely decorated, tons of blankets and towels. We had a bit of a glitch in the beginning as the temperature turned cold unexpectedly but all was immediately sorted out and it was toasty warm. Great views from the windows over terracotta roofs. Easy access to the center and parking for me was a plus.
FYI: There is a great sushi near the carrefour. Hoseki on via il Prato 65