My husband and I had a great time in Florence staying in Cristina and Gianni's apartment. Cristina was wonderful and friendly - she met us at a local cafe then took us to the flat and giving us a map and other tips for the local area. She also brought us a gift of some local sausages which were great. The apartment itself is as it looks in the photos - very clean and spacious, good heating (we went in January) and fully equipped kitchen. The flat is close to a supermarket and the bakery on the ground floor is really good for breakfast. It was a 15 to 20 min walk to center of Florence with cafes and little shops on the way.
We would definitely stay in the flat again if we return to Florence!