 The set of the sitcom (the lavish Nutt Hotel) was actually the set  built for the movie _Big Business (1988)_ (qv). The producers of the  movie couldnt get the rights to film inside the actual Plaza Hotel  in Manhattan, so had it recreated on sound stages, and built "The  Nutt House" around it to try and recoup construction costs.  Unfortunately, it proved an expensive flop.