I had the great pleasure of staying in Giancarlos place together with two friends for a week in march 2016.
It was everything we had asked for and more. We enjoyed dinners together in the kitchen and living area and at the same time it was easy to get "your own space" if you just want to relax on your own. The place gives you plenty of space for it.
The view from the place, and the balcony, is just...wow! So beautiful. We enjoyed to stay 10 minutes walk away from the city which can be very loud in the evenings and nighttime. To be so class to the city and still feel like you are almost on the countryside is exceptional.
Giancarlo is an amazing host. He welcomed us with prosecco in the fridge and several bottles of water. He was helpful if we asked for help with ordering taxis and when it turned out there was a problem with one of the beds he fixed it immediately as soon as I let him know about it.
I highly recommend this lovely place if you are going to Florence. I would love to stay here again, and so would my friends.