The plans sparked concern among the city’s preservationist groups. The Art Deco Society of New York posted a notice on its website headlined “Deco in Danger,” warning that the hotel “would be gutted and turned into condos.” The group invites readers to fill out a form to go directly to Meenakshi Srinivasan, chairwoman of the New York City Landmarks Commission, to demand that the panel quickly designate the areas for protection. The hotel’s exterior is already designated a landmark, while its interiors aren’t.