The Hyatt West Hollywood is known particularly for the wild parties thrown by several rock groups including Led Zeppelin.  They rented six floors for a few of their parties.

Clockwise, from top left: Jimmy Page, John Bonham, Robert Plant, John Paul Jones

Led Zeppelin were an English rock band active in the late 1960s and throughout the 1970s. Formed as the New Yardbirds in 1968, the band consisted of guitarist Jimmy Page, singer Robert Plant, bassist/keyboardist John Paul Jones, and drummer John Bonham. They are widely considered to be one of the most successful, innovative and influential rock groups in history.

• http://en.wikipedia.org/wiki/Led Zeppelin
• Gordon, W. A., 2002, The Ultimate Hollywood Tour Book, North Ridge Books, Lake Forest, CA, 272 p.