Teresa's apartment is minutes away from the S.M. Novella train station, and conveniently close to all major sights and great restaurants. It was clean and comfortable. Teresa had tangerines, oranges, muffins, ckake, nuts, juice and wine waiting for us. She allowed us to come early to drop off bags the day of our arrival, and was willing to keep our bags for us the day of our departure since it was later than check out time. She is such a sweet and accommodating hostess, we couldn't have had a better experience for our first airbnb stay.
Right around the corner is a fantastic family owned and operated restaurant, Brandolino Ristorante. Had one of the best meals in Italy there (try the mussels).
Teresa's apartment even had a washing machine which allowed us to freshen up some clothes for our last few days. And the internet worked beautifully there - unlike at some hotels.
For an authentic Florentine experience, I would highly recommend booking this apartment.