I decided to go in Florence for 2015/16 New Year's Eve with a friend and I found Tommaso's room from 31st Dec to 2nd Jan.
He wasn't in Florence when we arrived, therefore we arranged to get the keys in a bar and we met in 1st of Jan.
It all went well, Tommaso is a very nice person, friendly and helpful.
The room is not in the centre of Florence, but it's reachable by bus or, to better enjoy the city atmosphere (that's what we did), you can walk and in about 30 mins you'll arrive in the centre.