Hollywood’s grande dame hotels, the Sunset Tower and the Chateau Marmont, stand like stone sentries on Sunset Boulevard, less than two miles from the decidedly less stylish stretch of Hollywood Boulevard that hustles from morning to night with camera-toting tourists and Spiderman and Batman impersonators. The Tower and the Chateau are as romantic, seductive and happening as ever, at once guardians of an imperiled history but very much of the moment, with deal-making lunches and opening parties drawing clumps of paparazzi outside the driveway of Chateau Marmont, and limousines backed up along Sunset Boulevard in front of the Sunset Tower.