Fifty-three elegant Entree Gold rooms are part of a $45 million expansion project at the 342-room Chateau Whistler Resort in British Columbia. During a gala weekend in December, guests celebrated the completion of the 150,000-square-foot addition that includes a total of 221 guest rooms, a 12,000-square-foot ballroom, four breakout rooms with a rooftop garden terrace, a full-service spa, and Portobello restaurant.