What you want to select for and sort on is the absence of 1.) phone calls 2.) movies 3.) room service 4.) wake-up/alarm calls 5.) sloughed skin cells on bedsheets.
What you do want to look for is hair samples and minute blood samples from used nose-blowing tissue.
Yikes. Had it not been for #5, I'd be pinged every time I stay in a hotel. I seldom make calls, always take a book for entertainment, eat at a restaurant within walking distance, and use a travel alarm clock to back up the clock radio normally in the room.
Never thought dandruff would be a saving factor!