We had a great stay at Federico's appt. Especially the view from the terrace and airco were highly appreciated. It's the penthouse, so it's a bit of climb but really worthy getting there. Imagine having an espresso late night on the terrace with the Duomo highlighting your view. Pretty magical. Amongst other things, we had an aperitivo at Amblé and visited the Abbazia di San Miniato al Monte. Thanks for those fun tips!