Shortly afterward, Sonesta looked to sell its interest in the hotel to Harry Helmsley, and Wellington attempted to take over Sonesta by buying its shares. Both the sale and the attempted Sonesta takeover were unsuccessful; and Wellington made an offer for Sonesta's share of the hotel in April 1974, which Sonesta refused. Late 20th century Westin ownership In November 1974, Western International Hotels announced its intention to buy the Plaza Hotel from Sonesta for $25 million. The same year, the Edwardian Room was largely restored according to designs by Charles Winslow, and was rebranded as the Plaza Suite. Following Western International's acquisition of the Plaza, it renovated the interior spaces, cleaned the exterior, and restored much of the hotel according to the original designs, at a total cost of $200 million. The four hydraulic elevators serving the Central Park South lobby, among the last of their type in the city, were replaced with electric elevators in 1976. Westin also bought the Shinn murals that year for $1 million; they had not been part of the original sale. The Rambusch Company was hired to restore the Oak Room and Bar. The next year, a 204-seat theater called Cinema 3 opened in the basement. The Persian Room was closed in 1978, and a clothing boutique opened in its place. Westin had planned to restore the Palm Court's skylight, but this did not happen. By the late 1970s, the Plaza Hotel was again making a net profit. Western International changed its name to Westin Hotels in 1981; the hotel was renamed soon after, becoming The Westin Plaza. However, Westin started to lose money in the late 1980s. By 1987, Westin's parent company Allegis Corporation announced its intent to sell the Plaza, generating interest from at least 150 investors. The Plaza, along with the rest of the Westin chain, was transferred to the Aoki Corporation and Robert M. Bass in January 1988. Shortly afterward, Philip Pilevsky and Arthur G. Cohen expressed their intent to buy the Plaza and turn it into a hotel-cooperative. Trump ownership In March 1988, real estate developer Donald Trump bought the Plaza for $407 million he borrowed from banks. After gaining title to the hotel in July, Trump put his wife Ivana in charge of renovating and managing the hotel. The Trumps subsequently announced a major renovation program, which entailed restoring the lobby and some of the other interior elements.