The Astor is the Sheraton Astor now. As long as we're paying attention to the old pile again, let's look at a shot from the recent "Gatsby" movie. It has the old hotel, with the sign blocked out and a new sign above. See it? Couldn't have lasted more than a few seconds, adn no one was paying attention to details like this.
Hotel Sayre? That was Zelda Fitzgerald's maiden name.