I've stayed at Luca's place for almost a month. The apartment has a perfect location, close to all the sights and above a very good panini shop. Unfortunately the power went off after a few days, but Cristina (the woman taking care of the apartment on behalf of Luca) took very good care of me. She came immediately, called an electrician and solved the problem by moving me to another apartment closer to the duomo, all within a few hours! Besides that she checked in on me regularly to see if I was okay and still satisfied with my stay. I can't recommend this place and host enough, both are wonderful! I'm definitely staying here again when I come back to Florence.