I was recently planning a trip to Vegas (which unfortunately fell through due to lack of $$$) and almost booked a $10/night hotel. I wondered why it was so cheap (good location) and looked for reviews. They were pretty hilarious… hookers everywhere, police showed up three times per night, sticky sheets, etc. (just like undergrad!) anyway it turns out that there are quite a few hotels that the squeamish might have trouble with. Here is a really funny list of the world’s dirtiest hotels from tripadvisor.com.
World’s dirtiest hotels