There was a time when the restaurant was the beating heart of the hotel. Not the lobby.Not the spa.Not the room. The restaurant. For much of the 20th century, hotels were not just places to sleep. They were the social centers of cities. Business deals were made in the dining room, weddings celebrated in ballrooms, and political conversations happened late into the night at the hotel bar. The grand hotels of Europe and Ameri ca built their reputations not only on luxury rooms