The Courtyard by Marriott DC Convention Center stands close to Historic Union Station and the U.S. Capitol. The stately downtown Washington hotel is across the street from the International Spy Museum, which is a treat for kids of all ages, and close to the Washington Convention Center and MCI Center. Guests perks include indoor pool, fully equipped business and fitness centers, gift shop, and a crack team of concierges adept at adroitly arranging teacher tickets and bagging dinner reservations....