Sure, there is a panel at the front of the storage area the blocks all the open space. I attached a photo to show you with the panel removed (too lazy to take all the stuff out!). There is some wiring and propane lines behind the panel so I made sure to cover them with 1/4 inch plywood and staple some of the wires at the top of the area out of the way do I wouldn't damage them when putting stuff in this space. Attachment 24861
I also did the same thing under half of the couch (the half towards the front of the trailer). Again there is nothing but open empty space here expect for some wiring and water lines. I used 1/4 plywood make a floor to cover all the waterlines and wiring so now it's a great spot to store small bags or suitcases. Attachment 24863
I was looking under my couch (2017) and there's TON of space under there but the front piece on the couch is a solid board that may offer some support to the couch. I don't see the slide out motor or arm in your picture 🤔 Here is what mine looks like...