After checking into your hotel room, go back out and count the doors from your room to the nearest stairway.
In case of fire, the stairway may be the only way out. If you had to crawl under a blanket of thick smoke, you could just feel the doors and count down until you know you have reached the safety of the stairway.
Don’t forget to pack your trusty flashlight, in case you need to exit during a blackout.