Federico's place is well located to visit Firenze if you have a vehicle or do not mind walking to the bus. It's a quite, green, treed area. We did not meet Federico personally; He had someone from his agency meet us and they were on time.
The home is a studio, with a very fully accessorized kitchen for coffee, toast, cooking all around. The dishes were not as clean as they could be.
The bed is queen...great for a couple or a couple with a toddler or infant as we have. For winter, the heat is fantastic and was easy to control. There is also a washing machine that helps out travelers. It worked well and all the clothes dried on a rack overnight.
There is a small parking space on the property, which we did not use do to the tight maneuvers needed to park. The home, though, is located next to a neighborhood park, which had sufficient parking for our SUV.
The internet connection was fantastic... a rarity for many airbnb's in Italy. The home also has a range of TV options [and a DVD player] for additional in-home entertainment.
I would recommend Federico's place to any couple or small family (maybe two kids). There is a sofa too that can be used for sleeping. The home is about a 5 - 10 minute drive into Firenze...where you can park along the ancient walls for a small fee.