I am not sure if this ever got answered.
I 'borrowed' this pictures from the wdwinfo website.
If you look to the lower left hand side of the picture, you can barely see the top of a desk. On both sides of the desk are drawers. Under the TV is the cooler, so no storage there. However, over the TV are three more shelves. I think there is a blanket or pillow on one of the shelves.
Further into the room, behind the small white trash can, there are another three small drawers.
This floor plan is from the disneycruise website.
In this diagram, next to the verandah, opposite the Murphy Bed outline, there is a Steamer Trunk with three big shelves inside. Different categories / rooms have different widths.
I think there are some more small shelves in the closet.
We overpack way too much, and we have found plenty of room to put all of our stuff away.