This is a guess and not a fact but..the last time my boyfriend and I were in Disney we requested a King size bed so they put us into a Handicap room that was not being used that week..the bathrooms have the shower that a wheel chair can just roll into, meaning there was no tub..no matter how many towels we put down, the floor would always flood..based on that fact I would make an educated guess that those types of bathroom would not be on a 2nd floor because of the risks of flooding.