I agree that The Imperial is a lovely building (the Art Deco suites are much lighter, by the way, than the more traditional offerings), but the food has never been up to much here and when Pierre Joachim and most of the management left last year, standards definitely dipped. They never did get around to building the spa they always promised.
If the building matters more than the food and the service, then I can see your point, but I would rather have great service and food.