In this interview about Gulf War 1, Bernard Shaw said anti-aircraft batteries were surrounding the hotel. I think it was Peter Arnett who said that there was an anti-aircraft battery on top of the hotel as well.
http://www.cnn.com/COMMUNITY/transcripts/2001/01/16/shaw/
Bernard Shaw: First, my feeling and description of the opening moments of the war when I looked outside the hotel window and saw silvery pieces floating from the sky; instantly I knew it had to have been radar jamming chaff. Equally instantly, anti-aircraft batteries surrounding the hotel began firing frantically and aimlessly into the black sky. Air raid sirens wailed and I became very angry because I knew I had no control over my safety or fate and I knew the war was now underway.
CNN Moderator: Did security personnel at the Al Rashid Hotel try to remove you from the hotel room before the U.S. began its air strikes, or only afterwards when it realized you were broadcasting to the world that Iraq was not in control of its airspace at the moment?
Bernard Shaw: Over long stretches of time into the night, security forces tried to flush us out of Suite 906 at the Al Rashid Hotel. I told Peter Arnett and Holliman that when anyone banged on the door at least two of us should hide -- under tables, anywhere -- so that if one or two of us were pulled out of the suite then one of us remaining could come up on the air and report to the world what was happening.