We were pleasantly surprised with how spacious and clean Carlos' place was. He accommodated an early check in by an hour, and greeted us personally. We wanted to book a reservation at a busy restaurant and Carlos tried calling for us right then and there and later on as well. When we couldn't get a reservation, he suggested another popular restaurant.
Positives: Bus stop is right outside the apartment; quiet residential area; grocery store nearby; screens on the windows so bugs don't get in; private; Netflix!; spacious; comfortable bed.
Negatives: We felt more comfortable with wearing flip flops in the shower; bus rides to the main area in the city took about 17 mins so not very central but also not that bad of a commute.
Overall we had a wonderful stay at Carlos' place. There was a lot of construction near the Main station so the buses didn't stop there. This was pretty confusing for us but we figured it out by asking locals/walking around. Lovely time in Florence!