Cristina's apartment is in one of the best neighborhoods in Florence right by Santo Spirito where there is a market almost every day and large food and antiques/clothes market on the weekends. I stayed for two weeks and felt at home in the apartment and the neighborhood. There's a great restaurant that serves breakfast and lunch right below the apartment, Della Lola, which I highly recommend. There is also a fantastic yoga studio down the street from the apartment.
Cristina was a gracious host, approving my request to stay within hours and making herself available for check-in later that same day. The apartment is really clean, has lovely tall ceilings, has a wonderful bathroom with a bathtub, and the bed is very comfortable. A bonus was having a washing machine since I was there for 2 weeks. The only thing I would note is that because the apartment is on a narrow street, it doesn't get a lot of direct sunlight (at least in October when I was there), but there is lovely lighting in the apartment.
I would definitely stay again! Thank you, Cristina!