 After World War II, the Palace welcomed such guests as Ernest Hemingway, Orson Welles, Lauren Bacall, Rita Hayworth, Ava Gardner, and the Duke and Duchess of Windsor.In 1972, one entire floor of the hotel temporarily became the embassy of the People's Republic of China, as they re-established diplomatic relations with Spain.Henry Kissinger met with the Chinese at the hotel during this time, paving the way for the re-establishment of relations between China and the US.