Thanks for the tip, my son will be there this summer and I sent your comment to him....he will have nearly 5 weeks in Rome, do you have any more suggestions?
Beyond Rome...Venice, Florence and the hill towns of Tuscany are must sees. I fell in love with Capri and spent an unscheduled week there. The whole coastal area around Naples is to die for. One thing to be warned about is hustlers and theives. I lost a bag of luggage in the Milan train station when I was distracted by a someone asking for change for a US dollar and I looked away from my bags for a second. Be aware of them...they target unsuspecting tourists mercilessly and can of course mark you easily. If he he is on his own he is more vulnerable than if with someone or a group. Emphasize that because having crucial items stolen can potentially ruin a stay.