My husband and I bought an '89 about three weeks ago in similar shape. And somebody had tried to hide the damage by painting the interior navy blue...
Ah, well. We're up to it. And not to sound sorrowful, but we really have no choice. We needed a place to live, so here we are.
Person we purchased from said a bear had tried to get in through the bathroom vent. But the interior looks like it may have spent a Winter or two exposed to the elements.
Bathroom is shot - cabinets were water damaged, floor is soft, sink cabinet is almost powder.
Kitchen cabinets were painted with a pretty good primer, so very little damage, but again, the floor is toast.
An interior rebuild isn't terribly intimidating. We have some experience. However, the lift mechanism hasn't been lubed in many years. One of the cables wasn't on its pulley (found THAT in a kitchen drawer) and the guide bar literally screamed when we tried to lift it.
It tows decently. And we've slept in it, pretty comfortably, after vacuuming, scrubbing and dousing every available surface with Lysol.
But...everything is so sad.
Notable exceptions: the fridge works perfectly in two of the three modes. Water pump and electric outlets work. Vent above the stove runs. Battery lights work. And amazingly, the grey velvet upholstery on the dining cushions and sofa bed is in excellent condition - no mildew, no rips, just a bit stained. So, there art thou hopeful.
My intention is to keep a visual record of what we do - very likely a remodel more than a restore. (Who uses a closet when they camp??)
So please keep posting those pictures. I need ALL the advice and help I can get!