If you can, try and book a room that is on the second, third, fourth, or fifth floors, as ground floor hotel rooms are more susceptible to break ins. Always keep in mind that hotel rooms above the fifth floor may not be accessible by many fire engine ladders if a fire breaks out in your hotel.

Always check to make sure that the door to your room locks properly, and that the windows and sliding doors open, but also lock securely.

It really isn't a good idea to hang a "please clean the room" sign on the door knob when you go out, because it can signal to a would be thief that there is probably no one in the room.

It is prudent to not give out your room number to anyone that you don't know and trust.

There are small, battery-operated, motion-sensitive, burglar alarms that can be hung on the inside hotel door knob, or there are wedge-shaped alarms that you can wedge under the door that will accomplish the same thing. If someone tries to open the hotel room door, the alarm will go off.

Two less sophisticated methods you can use are moving a chair in front of the hotel room door, or wedging a standard rubber door stopper under the door. Either one of these methods are also effective.