Had a great time staying at Federico's flat. It is completely central, five or ten minutes walk to the majority of landmarks, and the pictures give a very accurate representation. We never met Federico but Ilaria was really helpful, giving us some nice restaurant recommendations and helping us orient ourselves. The room was nice, and the flat was quiet despite it's location directly in front of a busy square. Also, we were able to leave our luggage there for a few hours after checkout with no problem.