Every one here has commented about the truck, but what about the camper?
From those two pictures it looks as if the camper is a stripped model.
No AC on the roof.
Plenty of rust showing on the jacks, lots of dents which could allow water to get inside.
Broken lights outside (water going in)
Look this unit over very close. Look for water stains along the baseboard and under the beds.
You may have to spend lots of money to make it water tight!
Not sure of all above? Then bring a friend along to see what he says!!
Sorry for the negative remarks, but it's better to be safe than sorry.
Good Luck & Drive Safe!