We spent four nights at Grazia's place with two children (8 and 10) and had a great time! The apartment is convenient to major attractions in Florence by walking, but also nicely separate from all the touristy hustle and bustle. The apartment is very efficiently organized, and we were able to save some $$ by fixing meals in the small but highly functional kitchen. A well-stocked "Penny Mart" grocery store is a 10-minute walk away, and had anything we needed.
Grazia herself was very helpful in answering our questions, was quick to respond through the AirBnB app, and went above and beyond in helping us coordinate covered garage parking for our rental car.
We found not shortage of restaurants in the area, and driving in and out of Florence was very convenient to day-trips to Pisa, Lucca, Sienna, etc. The apartment is outside of the ZTL (no traffic zone), so no restrictions on when we could come and go.
Overall, we had a great stay at Grazia's place, and would highly recommend it!