Gaia's home was very conveniently located. Simply minutes from the train station. It overlooked the beautiful piazza-- one of the best views I had in my stay in Europe. Gaia was warm and friendly, offering me help anytime I needed. She also prepared some simple snacks for breakfast which was thoughtful of her. She provided a map, a list of restaurant suggestions and useful contacts all printed out! Her home was stunning, and tastefully decorated. We were more than comfortable living in it.
Just note that the apartment is on the highest floor with no lifts. It was really tough for us to lug our heavy luggages up and down. It wasn't much of a problem for me, but more of one for my mom. Still that would not deter me from choosing her home once again if I ever visit Florence another time!