I stayed for 2 nights in Marco and Cristiana's place and it was great. Very close to the train station, and within easy walking distance to many attractions. The room itself was cozy and comfortable. I shared a toilet with another guest, which was no problem at all. Marco and Cristiana always sat down with us for breakfast and we had a nice chat. I was sad to leave and next time I visit Florence, I will definitely stay at their place.