Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email New York may be the city that never sleeps but when you’re paying top dollar for a hotel room, you’re going to want some quality shut-eye. Fortunately when travelling to the US the luxury hotels in Manhattan are among the best in the world, offering the finest interiors from renowned designers, chic in-room amenities, attentive service, and glorious city views (often the number-one selling point for a hotel). Which means, whatever’s on your NYC itinerary – be it reaching the top of the Rock (aka the tippy top of the Rockefeller Center),…