The latest L.A. after-hours trend: intimate spaces that mix Tony Bennett cool with Tony Duquette-inspired design. • With views of the Hollywood Hills and a pool flanked by a wall of mirrors, the Terrace at Sunset Tower Hotel (8358 Sunset Blvd.; 323/654-7100) draws passels of starlets. • At Stone Rose (8555 Beverly Blvd.; 310/228-6677), in the refurbished Sofitel, the clubbiness extends outdoors, where crowds call dibs on the terrace's sofas and cabanas. • At Katsuya (11777 San Vicente Blvd.; 310/207-8744), a bento box of a restaurant from chef Katsuya Uechi, diners sit in an alcove beneath oversized photos of geishas, then unwind with a cocktail in the all-white lounge. • And fresh from a Morocco-meets-Regency makeover by Mark Zeff, Social Hollywood (6525 Sunset Blvd.; 323/462-5222) is equal parts democratic and elitist: the downstairs bar and the restaurant are open to the public; upstairs, the dining, gaming, and media rooms are strictly members-only.