The event’s venue is the only Philadelphia hotel on the National Register of Historical Places and was awarded the distinction in 1977. Story, photos by Sharon Kozden Philadelphia’s iconic Bellevue Hotel (also included on the Historic Hotels of America registry) hosted 14 other such accommodations winners from the National Trust for Historic Preservation for what was billed as a Philadelphia and Media Marketplace Luncheon. How does a single location, specifically the Bellevue’s 12th floor’s conservatory, fit ’em all in? Simple: these 15 lodging gems located across the country sent their very best representatives along with the necessary items to create alluring table scapes filled with theme-related décor, pamphlets and other…