I am flying in and out of Pisa in June for Four days with my son. Want to get the best experience of Tuscany. We are going to travel by train. I have not booked accommodation yet - I was thinking of basing ourselves in Pisa and then taking day trips or is it best to book the first night in Pisa and then book as we go - is it easy to find places? Where do you recommend we visit - I am thinking Florence and Siena! Any advice would be appreciated - thanks!