House Guest Etiquette and the "Big Question"

What started me thinking about this is the Big Question: What to do with the bed before I leave my host's home?Sometimes I strip the sheets & sort of remake it with the bedspread, and other times, I remake it (usually when the host says "Please don't do anything!") and there have even been times (Oh mother-in-law how I love you!!!- forgive me!!) that we've left the bed sort of messily thrown