What to do if someone knocks on your hotel door in the middle of the night?
What to do if someone knocks on your hotel door in the middle of the night? Call the front desk. They will let you know if it was authentic. They will also contact security if necessary.
Why would the police knock on my door at 4am?
Just because it's 4am doesn't mean the warrant isn't valid or they should come back when it's convenient for you. If it's 4am and they are serving a warrant, it's because the warrant is for something important, and they want to get you at a time when you are less likely to dodge it.