Taking our children (ages 15 and 10) to Rome for the first time. We'll be traveling at the end of March 2013 during their school break. What are your suggestions regarding hotels? Most hotels seem to be smaller rooms for 2 people rather than a family of 4. I prefer to be within walking distance of the Trevi Fountain, Spanish Steps, or Colosseum. Budget is $300/night but willing to go higher to get a nicer hotel. Is a rental car necessary to get around? Can we get by with the train and walking?