Alessandro is really a very good host. He's kind and takes care of you and your needs. He can also help you to discover and enjoy his beautiful city.
His house is really perfect: it is quite small but extremely comfortable and cosy. I've been there with three other friends and we were perfect!
It is totally renewed and located in an amazing position, just behind Piazza della Signoria and Ponte Vecchio.
Trust me, if you're planning to go to Florence, there's no doubt where to stay...