What train do you take from the Port Authority to Waldorf Astoria?

You can not take a train from the Port Authority to the Waldorf Astoria. The Port Authority is a bus terminal and the Waldorf Astoria is a hotel located in Manhattan. You can get to the Waldorf Astoria by taking the subway lines B, D, F, or M and get off at the 5th Avenue/59th Street station. From there, it's a short walk to the hotel.