Hotels Hilton San Francisco Union Square completes upgrade By Danny King / April 20, 2017 Share 1 The hotel upgraded its panoramic Cityscape bar and lounge. -- The Hilton San Francisco Union Square has completed $26 million in renovations to its guestrooms, lobby, Cityscape lounge and Urban Tavern restaurant. The 1,919-room hotel, which is the West Coast's largest, has improved outlet access in the guest rooms of its Tower Two while upgrading the rooms with noise-cancelling windows. Additionally, the bathrooms upgraded their lighting systems.Other improvements include Cityscape, the 46th-floor lounge that affords guests 360-degree views of the city and out to the Golden Gate Bridge. About $6 million was spent improving the hotel's 30,000-square-foot lobby.Additionally, the hotel announced that it will share certain services with the 1,024-room Parc 55 -- A Hilton Hotel, which is two blocks away. The hotels will offer reciprocal billing and provide guests access to each other's meeting spaces.In all, about $130 million has been spent on hotel upgrades during the past eight years.The hotel, which has 134,000 square feet of meeting space, was constructed in 1964 and received additions in 1972 and 1987.