Sleeping in the airport is not for everyone (especially the unprepared traveller)!
If you've read the airport reviews and it doesn't look too promising for an overnight slumber, there are many airports with hotels at, within or near the terminal and they will be more than happy to accept your money for the convenience of a warm bed and shower. I'll admit that I've caved in to these luxuries on occasion (Newark Airport during a snow storm is my kryptonite).
Whether you choose the airport floor or the airport hotel, I wish you Sweet Dreams!
I've researched airport hotels for each airport guide and link to each hotel's Tripadvisor page, where you can continue to read traveller reviews before deciding whether to sleep in the airport or a warm (cheap) bed.