Trailers to Look For ...

This is not the kind of trailer you'd want if you intended to keep it original.  You would have to tear off the entire external covering ... or remove the entire interior ... and then rebuild the frame ... after propping everything up so all the sides and corners match up.

BUT, 

if you are looking for a camping trailer that you can save the parts from ... and tear-down to the trailer to build a tiny house ... 
then this is what you look for and buy as a bargain 

(or maybe even be "gifted" it).

This is the front right corner as seen from the outside.

This is the front right corner as seen from the inside.

This is the right rear corner as seen from the outside.

This is the right rear corner as seen from the inside by the tub/shower.

This is the back left corner under the bunk beds.
Look for lots of silicone gel on the corner seams ...