We highly recommend Marco's place!!! It's absolutely perfect to visit Florence. The place is spacious, comfy, well decorated and very clean. The A/C is a real treat when it's 35°C outside!
We were close to everything and Marco gave us some tips about the best pizzas, gelatos and trattorias in the city during our check-in, we really appreciated it! And there's a really cool pub next door (note that it's very well soundproof so you don't hear the noise from the street). Communication was easy and friendly. Grazie mille Marco! :)