On this same topic, I decided to rotate the mattress to hopefully get a little more comfortable while shopping for a new one. Was horrified to find the underside SOAKING wet with little spots of black mold forming and rust spots where it sat on the hinges.
The RV is only 3 months old. The mattress has apparently been acting as a very effective sponge to absorb condensation from the wall.
This makes perfect sense of course, but I had never heard that I needed to keep it from touching the wall. Now I know, and you do too.....
Anyway the mattress went straight to the dump and I ordered a Tuft & Needle from their showroom. Will update you with how that works when I receive it in a few days.
Oh and I also had to replace the platform portion of the bed base, which was made of MDF and which had absorbed quite a bit of water as well. Now it's 3/4 sanded pine plywood.
Still working out a plan for keeping the plywood dry. I'm going to attach a few short lengths of PVC pipe to the wall to keep the mattress away from it and hope that air flow will keep the wood dry too.