We stayed 3 nights at Francesco's apartment and wouldn't be happier. Francesco welcomed us on arrival and gave us lots of information on the neighborhood and good places to visit. He even made a list of recommended restaurants in each quarter which is very handy for people like us who always look for places that locals will dine in. The apartment is literally 5 mins walk from the famous central market. And from there, 2 mins to San Lorenzo church and another min to the Florence cathedral. All the tourist spots are within walking distance from the apartment. We didn't take bus at all in Florence. The apartment is well-equipped with everything you need to cook, clean, wash... And it is comfortable to fit 4 of us.
Again, thank you for the great stay Francesco :)