Your decor is the same as mine. The J-couch and captains chairs use the same fabric as my Bounder. And I am pretty sure that what's missing is a long shelf that suppose to be under the window.
What goes there is a handy shelf that runs from the dinette up to just behind the driver. Gives you a nice place to put your coffee as you gaze out the window at a rain storm.
The shelf is 3/4" thick particle board with a slot for a vinyl trim piece that when installed extends a little above the edge of the shelf, to keep things from falling off the shelf. Mine also has a thin vinyl cover that's glued on top of the shelf. The shelf is around 3-4" wide and 12' long.
Those holes are where the right angle bracket that holds up that shelf are attached.