We are 4 people traveling through Rome this September 2010 and I can't find information on where are there parking places for our car for 2 days. Would you also happen to know prices/day? Thanks!
Ask your hotel for their best recommendation. Parking is very tight in Rome.
Very few travelers posting here try to park overnight in Rome, and those that do have sometimes been blindsided by the high cost and difficulty in finding overnight parking in Rome. If anyone knows, it's Roninrome. You can leave the question on his website.