I think this shelf mounts into the channel at the top of the photo. It is badly water damaged and the shelf part may need replacing. Facing Front of trailer.
When you remove the front mattress there is a plywood deck, hinged at the front of the trailer.
Also in the front (curb side) is the adjuster for the television antenna. My late father-in-law, who was a ham operator would have called this an armstrong unit.
When you open the hinged deck this pump(?) sits on the curb side just below two fuses. I am already thinking circuit breakers and a dedicated line for my computer. When I first opened this there were several healthy mud dauber nests. Otherwise insect free.
This is center front, pump(?) just to the right. Top center is the hole (now plugged with aluminum foil, where the mud daubers got in. You can see that the water tank is gone but the curb side mounting is still present. Not only are modern poly tanks lighter and more durable than aluminum but the replacement holds a bit more drinking water as well.
Street side water tank mounting. Gas line sealed to floor with silicone caulking. Some of the original linoleum has come off the floor under the tank.
there is also a flange to mount the 'coffee table' outside over the curb side wheel. (I know, it is really for a bit of canvas to hide/protect the wheels but could not resist a second purpose for it.)