This is the first time I've used Airbnb, but I'm pretty sure properties like this are the reason the "superhost" category was created.
I shared our arrival details with Lorenzo and, as it happened, we were going to be in Florence before check-in time. We had no problem with waiting out the extra time, but Lorenzo said he'd keep us posted. On the day, he let us know we could pop over right away. That was nice of him.
The property is marvelously close to the train station so, after a quick walk, we were stepping through the door. Lorenzo and his mother showed us around, and we were immediately delighted by our choice. The apartment is spacious and clean, and permits excellent breezes on cool days (leave the place buttoned up on hot days to benefit from the naturally cool walls and floor). The furnishings are delightful and the beds are welcoming. The terrace is delightful, especially in the late evening - a great place to eat food and wine gathered from nearby sources.
After a quick overview, they presented us with a rewardingly thick book of helpful information and suggestions for restaurants and local sights. This included a helpfully specific path to Piazzale Michelangelo, which overlooks the entire city. We had come prepared with our own investigations, but now we had another excellent source of information for comparison.
During the days after check-in, we were within easy walking distance of everything we wanted to see. Sometimes just as importantly, it was easy to walk back to the apartment in the middle of our sight-seeing for a bit of recuperation. The way this sort of convenience improves your day can't be overstated.
Lorenzo made sure we knew how to contact him. At one point, we had a small problem starting the oven and, after an initial attempt to fix the problem, he and his mother came right out to the property to get us sorted. We were grateful for the quick help.
There were only two minor inconveniences:
The terrace has a small mosquito problem due to the water pooling under the marvelous potted plants. Bring a bit of citronella to reduce this problem dramatically.
The Wi-Fi signal is quite weak, and only seems to work reasonably in the living room. Then again, it forces everyone to come together in the evening for their surfing. Not so bad, really.