I stayed at Antonella's place for a month and it was a great experience. Her home is just perfect. The room which she offers is big and spacious, and of course with a balcony which has a great view of the tuscan hills. There's a private bathroom for the guests, which is very practical. The kitchen is well equipped with all the appliances and everything works well. The location, on paper is a bit far away from the city center, but the bus connectivity doesn't make it feel so. This was my first trip to Italy, and living with an Italian family was an experience in itself. We shared a lot of food from our countries and got to know each other's culture. I got a lot of help from the family members during my whole stay for travel, food, bus timings, etc etc. They even helped me get my luggage to their home and were always easy to approach for any problems I had in the city. Since, Antonella is a tour guide, I got a lot of information about Florence and even nearby places like Lucca, Forte dei Marmi, etc. What I really liked is that the family members are very open to interact with you, and at the same time you get full privacy when you want, since you get your own personal room and a private bathroom. The kitchen is a shared space, so you have to respect their meal times, but it was never a problem for me. They also have a cute little dog (Pepsi), which is very adorable. I really liked living here, the place is very homely and worth more than what it costs.
I think this is a perfect location to enjoy the real italian lifestyle, and to actually enjoy the charm of the city.