The hotel began with a coffee shop and about 300 rooms in its first month of operation. Gradually, other facilities of the hotel was made available to the public. By the time, the hotel is already in full operation, it already has 450 available rooms, eight food and beverage outlets, a shopping arcade, a medical clinic, a dental clinic, a barber shop, and a beauty shop. In 1980, the hotel's allsuites wing, the Park Tower Suites was opened. The wing had 60 units each with a small kitchen. However the hotel's operation was adversely affected by the 1981 Harrison Plaza fire. Sipalay Trading Corporation of Lucio Tan became a major stockholder of the hotel on April 19, 1985.
