It is obvious that Ernest Hemingway could never have stayed at the Tres Reyes Hotel, since it opened in 1963, two years after the death of the American writer. However, in July 1968 the hotel had the honour of welcoming Mary Welsh, Ernest Hemingway's fourth wife, who came to the hotel and to Pamplona to participate in the inauguration of the monument to her late husband, Ernest Hemingway, near the bull ring.
During the Sanfermines of 1984 another member of the Hemingway family stayed at the hotel. This time it was his granddaughter Margaux Hemingway. The American model and actress was filming with film director Bernard Foucher, her second husband, the documentary ‘Winner Take Nothing’ in which they follow in the footsteps of Ernest Hemingway in Paris, Pamplona and Venice. 'Winner Take Nothing' is the title of a collection of short stories by Ernest Hemingway published in 1933.
Actor Gregory Peck also stayed at the hotel in May 1963. Winner of two Oscars, he starred in two films based on Ernest Hemingway novels: 'The Snows of Kilimanjaro' (1952) and 'The Macomber Affair-Great White Hunter’ (1947).
In December 1964, the actor and director Orson Welles stayed at the hotel. Welles travelled to Pamplona and Navarre to shoot several scenes of ‘Chimes at Midnight’.
At the end of July 1987, the actor Stacy Keach, who played the American writer in the television series 'Hemingway', also stayed at the hotel.