Our stay with Sabrina was great. The apartment is located a block from the Duomo, making it central to everything in Florence.
The apartment it self was very clean, spacious, and modern (i.e. AC, Kitchen, bathroom, and washer/dryer).
Sabrina met us there for our arrival. She was very nice and hospitable. She also provides a list of helpful info and even local recommendations. I would stay here again, and recommend it to anyone!