This is a touchy discussion, but I'll jump in anyway, since I travel a lot for business and stay at a lot of hotels. On one hand, I fully agree that exceptional service deserves a reward and I never hesitate to do so when it's truly warranted. On the other hand, any frequent traveler will tell you that once you enter the travel system, everyone has their hands out and it's impossible to reward anyone and everyone who thinks they're owed a tip. I rarely travel with a lot of cash, and all expenses go through a corporate credit card with a bean counter at the other end who has a microscope attached to his forehead. I do the best I can, but IMHO the expectations for tipping sometimes get out of hand.