We booked through Christina. She is located by a U.S. military base in Italy so she speaks very good English. Her website is www.summerdaytravel.it and her e-mail is email@example.com She is very informative and helpful. We've used her to book our vacations ever since she helped us with our MSC cruise.
If you also want to check out other tourist agents in our area who have great deals as well, visit http://www.grandcanyon.it/ (flights and other vacations although flights FROM the US to Europe are mostly cheaper from an agent within the US).