This apartment is large, very spacious, and perfectly located. Very close, easy walking distance to the Duomo, the Ponte Vecchio, several museums, and markets. Just a ten minute walk from the Santa Maria Novella train station. Many wonderful restaurants very close, too.
The host, Michalengelo, was terrific and very helpful. The apartment has two bedrooms (one room with a queen bed, the other with two twin beds. Separate living room can also sleep 1-2 on sofa. Three bathrooms, two with showers. Fourth floor (top floor) but the building has an elevator once you climb one flight of stairs from the street. My only minor concerns were that the water pressure was adequate, but not strong, and the wifi worked but was a little spotty sometimes.
Overall, I would highly recommend this apartment for a visit to Florence.