Almost always the Amenity
Unless I'm just spending a quick one-nighter at a property, I almost always will chose the amenity.
The amenity at my usual property, GH TPA is always an amazing selection, and the amenity at all of the Hawaii properties has always been wonderful. I don't think that I have ever had an amenity that I did not enjoy. However, the best that I have ever had would have to be the fruit/cheese tray + wine at the Hyatt Regency MCO Int'l ... the largest and best presentment ever!