I enjoyed the movie. Willem lived up to his stellar acting reputation IMHO. Willem's character Nemo sees himself in the art work of one of the apartment paintings with a long lizard's tongue darting out to the cleaning lady's lizard's tongue (she also was in the artwork). My take on it was that he wasn't hallucinating and that he wasn't hallucinating during some of the other impossible events like when the apartment owner shoved Nemo's head into the sink and caused him to get knocked out for awhile, when he sees the owner's daughter and owner's dog outside the window when it was snowing, when the cleaning lady looks up into the camera to let Nemo know she knows she is being observed by him and can see him through occult means, or when he communicates with the apartment owner during one of his dreams.
Of course the big message here is that most extremely wealthy people are heavily tied to satanism and the makers of the film want to make sure that those people viewing the film that are not part of the Eyes Wide Shut crowd understand this.
I finally got to see what the inside of a 20 million dollar spread looks like thanks to this film.
Thanks again for bringing this movie to my attention.