We were welcomed warmly and got introduced with the apartment when we arrived. The apartment is as advertised. Clean, quite small, but still enough for two. Even though the only bed is the sofa bed, it's still fairly comfortable and was just the right size for us (I'm 190 cm tall and this was one of my main concerns :) ). The location is absolutely the best feature of this listing, since you can't really get much better than this. The railway/bus station is 15 min walk away as well as the historical center of Florence.
All in all, we were very satisfied with our stay and would recommend the apartment to everyone for a cheap stay in Florence with a great location.