Ours did and we ended up putting a piece of plastic molding at the bottom for a better seal.

Hi my name is Felipe Goncalves and i currently work in the plastic industry in Leominster, MA.

They have tons of brand new equipment, they plastic wrap entire loads of dirt, etc. 

I am not interested in some cheap plastic shed or similar (sorry, no offense).

The belly board had been cut (that’s the plastic that holds the insulation in under the trailer) for previous plumbing repairs.

The bathroom walls were done in what looked like tile, but cop a quick feel and you'll find that it is actually some sort of plastic paneling.

FWIW, the bath ceiling is plastic tile in a drop grid. 

At a micro level, if those jet fittings in the tub are white plastic that has turned yellow, you can make them look at lot better by removing them and spraying them with white spray paint that is intended to adhere to plastic.At a macro level, if you want to modernize the bathroom with a lot of work, move the toilet to the shower area and enclose it in a separate room.

I was doing some plumbing this past weekend connecting CPVC to cast iron and the 3/4" CPVC compression fittings will fit around the 1/2" iron pipe.I don't think the sharkbites or the white plastic compression fittings will work though just the CPVC compression fittings.Here's a picture of it:They are $3.92

Assuming it's not an A+ luxury unit in the most desirable part of town, then I'd usually recommend a plastic shower curtain instead of a glass door, because it costs much less and can be changed easily between tenants (whereas a glass door often accumulates water spots that can be difficult to fully clean after a few tenants...and, as you mentioned, if a tenant breaks a glass door, that could be a costly headache).Also, assuming it's not an A+ luxury unit, I'd usually recommend going with a fiberglass unit (either tub or shower) instead of tile, because tile is usually more expensive, and it can be more likely to begin leaking, and it requires more upkeep.