does it have a railway track?
Yes, Track 61.
Waldorf Astoria New York
The hotel has its own railway platform, Track 61, that was part of the New York Central Railroad (later Metro-North Railroad), and was connected to the Grand Central Terminal complex. 
who owns the waldorf astoria in new york Anbang Insurance Group what is it? It is a luxury hotel. when was it built? 1931 how many rooms does it have? It has a total of 1,413 hotel rooms as of 2014. who designed it? Schultze and Weaver
wiki:7502705
Waldorf Astoria New York [SEP] Secret railway track
The hotel has its own railway platform, Track 61, that was part of the New York Central Railroad (later Metro-North Railroad), and was connected to the Grand Central Terminal complex. The platform was used by Franklin D. Roosevelt, James Farley, Adlai Stevenson, and Douglas MacArthur, among others. The platform was also used for the exhibition of American Locomotive Company's new diesel locomotive in 1946. In 1948, Filene's and the New York, New Haven and Hartford Railroad also staged a fashion show on the platform. An elevator large enough for Franklin D. Roosevelt's automobile provides access to the platform. There is a pedestrian entrance from E 50th St., just to the left of the Waldorf Towers entrance.