Enrico's place isn't just a room to sleep in, it's an experience. Medieval beams, low ceilings, stone stairways - you really are in the centro storico. And then there is the terrace - a panoramic view of the Duomo and surrounding architecture that will take your breath away. What's more, Enrico is an exceptional host. I stayed in Florence alone over Christmas, my first time away from family during the holidays, but there was no time for me to feel depressed about it because on both Christmas Eve and Christmas Day Enrico invited me to eat and chat with his wonderful friends and we had some great food together. I'll have special memories of this Christmas because of him and his friends, so thank you Enrico!
Some practical things to consider - the apartment is at the top of some quite steep and uneven medieval stairways, there are at least 3 flights, if you struggle with heart, lung or mobility problems this place may be difficult for you to get to (I have asthma and I was out of breath every time). Also the ceilings are low so if you're 6ft + it might be uncomfortable for you.
But it's a magical place and Enrico is so kind, I'm sure you'll enjoy it!