Woman In The Hotel Room

Riddle: A women was sitting in her hotel room, when, someone knocked on the door. She opened the door and saw a man He said, "Oh, i'm sorry. I thought this was my room." And left. When the man left, the woman quickly closed the door and phoned security. What made the woman so suspicious of the man?

Answer: You don't knock on your own hotel door! Source: https://riddles.com/5958

A women was sitting in her hotel room, when, someone knocked on the door. She opened the door and saw a man He said, "Oh, i'm sorry. I thought this was my room." And left. When the man left, the woman quickly closed the door and phoned security. What made the woman so suspicious of the man? — Woman in the hotel room by StrawbarryAbby Riddle