Checked in late one night to the Marriott in Zurich - got my key card and proceeded to my room. I opened the door and it looked a little strange as the light wasn't on and I think the bedspread was on the floor. Next thing I know I heard a scream - and shamefully, I screamed at the same time - as a lady in the bed sat up and asked me to leave immediately.. Not sure how it happened but they'd coded my key and given us both the same room... since then, I have always put the safety catch on the door every night!