We are travelling for the 1st time to Washington with 3 children(9, 4, 3). Want to find accomodations that are reasonable. The Fairview Park Marriot has a great rate of $79.00. Not sure if this is too good to be true. Is this an ideal location to go back and forth from DC. We want to do the zoo, Smithsonian and some other sites in DC. Hoping to also be close to the metro. The Marriot site said it offers a shuttle to the Metro Parking area. Please help.