We really enjoyed our stay at Cristina's house. This is a 15-20 minute walk from the city centre in a sweet neighborhood.
Edward made us feel at home at check in and gave us some useful tips about Florence.
I suggest you make use of Cristina's local tips for places to eat, especially close to her house. You may end up having a great meal when you least expected it (we certainly did).
The garage is a half minute walk and has ample space for parking a car.
Highly recommended!