I agree with the tipping each day philosophy. Say you are staying 5 nights and have a wonderful housekeeper who does a fantastic job, makes towel art, arranges the plush, etc. As you leave on your departure day, you leave her a crisp $20 bill. But, today is the first of her two days off and another housekeeper who has not cared for your room at all walks in to find this wonderful surprise. Great for her, too bad for the nice woman before her. That's why I try to remember to do little tips each day.