Beginning in 1919, Hearst began to build Hearst Castle, which he never completed, on a 240,000 acres (97,000 hectares) ranch at San Simeon, California, which he furnished with art, antiques and entire rooms brought from the great houses of Europe. He also used the ranch for an Arabian horse breeding operation. San Simeon was also used in the 1960 film Spartacus as the estate of Marcus Licinius Crassus (played by Laurence Olivier). He also had a property on the McCloud River in Siskiyou County, in far northern California, called Wyntoon. Wyntoon was designed by famed architect Julia Morgan, who also designed Hearst Castle and worked in collaboration with William J. Dodd on a number of other projects. In 1947, Hearst paid $120,000 for an H-shaped Beverly Hills mansion, (located at 1011 N Beverly Dr, Beverly Hills CA 90210) on 3.7 acres three blocks from Sunset Boulevard. This home, known as Beverly House, was once perhaps the "most expensive" private home in the U.S., valued at $165 million (PS81.4 million). It has 29 bedrooms, three swimming pools, tennis courts, its own cinema and a nightclub. Lawyer and investor Leonard Ross has owned it since 1976. The estate went on the market for $95 million at the end of 2010. The property had not sold by 2012 but was then listed at a significantly increased asking price of $135 million. The Beverly House, as it has come to be known, has some cinematic connections. It was the setting for the gruesome scene in the film The Godfather depicting a horse's severed head in the bed of film-producer, Jack Woltz. The character was head of a film company called International, the name of Hearst's early film company. According to Hearst Over Hollywood, John and Jacqueline Kennedy stayed at the house for part of their honeymoon. They watched their first film together as a married couple in the mansion's cinema. It was a Hearst-produced film from the 1920s. In the early 1890s, Hearst began building a mansion on the hills overlooking Pleasanton, California on land purchased by his father a decade earlier. Hearst's mother took over the project, hired Julia Morgan to finish it as her home, and named it Hacienda del Pozo de Verona. After her death, it served as the clubhouse for Castlewood Country Club from 1925 to 1969, when it was destroyed in a massive fire.

Answer this question "How large was this mansion?" by extracting the answer from the text above.
It has 29 bedrooms, three swimming pools, tennis courts, its own cinema and a nightclub.