HELP: Water on floor in back bedroom 31C 2004 Minnie

I guess the left side is the wall and that corner looks darker but is that just the lighting, not moisture. and the right side is the bed. is there a compartment under the bed and is it wet inside. your fresh water tank isn't under there is it? no moisture when you pull that one drawer out? and are you sure you have a propane tank under the grey water? no overhead vent or light that is leaking? that cabinet is against the back wall? no city water or other water fill in that area?
bumpy