Continuity mistake: When Charlie goes onto the roof after Rose gets stuck by the closet, the lights are off in the hotel room because the power is out. But when they show Charlie climbing out of the window, the two windows in the shot have lights on, as though there were lights on in the actual rooms.
Suggested correction: You can see the lights come back on as Charlie is running towards the window. The power comes back on before he gets on the roof.
Character mistake: Tony, as a cop, should've known to cuff Rose's hands behind her back. He also apparently doesn't cuff Harriet properly as she's left outside with them dangling from one wrist.