The Cavalieri Waldorf Astoria, hailed as Rome’s most prestigious hotel and a favoured choice among celebrities like Leonardo DiCaprio and George Clooney, is now, for the first time, opening its doors to guided tours as part of the ongoing 60th-anniversary celebrations. Opened in 1963, the hotel is home to one of the world’s largest private art collection, an extensive gallery featuring thousands of pieces curated by the Terruzzi family, former proprietors of the five-star establishment. “It is a pleasure to do a tour in this space because it is open to the public, so anybody can come in and ad…