First things first, no sooner your bags reach the room keep it locked, this means putting all the locks on the door. Always keep your room key, flashlight, wallet and smartphone within easy reach. If you have any valuables make sure to keep them in the hotel safe before you go out. If you happen to bring your laptop, then make sure the safe is big enough to fit it in. If not, pack your laptop into your suitcase and padlock it.