I exclusively use Hilton because they are one of the VERY few who still allow smoking. I hate to share my spots because there are so few smoking rooms out there, when I must travel, sometimes they are sold out! I've driven MILES out of my way just to get a smoking property, and given how you can't light up anywhere in public anymore (and I refuse to stand in the snow in my PJs), my room has become my haven. But, for my fellow smokers who can't find anything (been there, done that)... here's a few recent places I've stayed that had smoking rooms.

Hilton Garden Inn Dulles North
Homewood Suites by HiltonŽ Denver Tech Center
Homewood Suites by Hilton Phoenix Chandler Fashion Center
Hilton Los Angeles Airport
Hilton Garden Inn Denver/Highlands Ranch
Homewood Suites by Hilton - Boulder
Caledonian Hilton Edinburgh hotel
Hilton St. Petersburg Bayfront

Always remember to thank the management (via comment card) for permitting and accommodating smokers. Else, we may find ourselves with no rooms at any inn.

Also, always to remember to rent Hertz cars. They are the last rental car company to accomodate and welcome smokers.