To address your questions:This would be a rental property, therefore if you have any suggestions on materials that are best and most durable, that would be great.

Otherwise, price slab, it's so damn durable it makes laminate look stupid.This counter looks as good today as when I did it in 2005.

Does the patient have living will, Durable power of attorney, and such basic estate planning document ?

Absolutely agree that you or your SO needs to have Durable Power of Attorney to do all of this - mostly b/c it makes it so much easier for you. 

For example, nice carpet or even hardwood may work well to match comps for resale, but durable vinyl plank is a good option for a rental. 

I figured they’ll last longer (cheaper over time), and they’re very durable (so I’m tenant proofing and preventing future maintenance)...After ONE year and ONE tenant, these floors are toast.

@Sean Autry I just read a post on this stating that 12mm is the way to go for greater durability.

Attractive, and durable finish. 

Different brands or low VOC options may be better.You can put tile in the bathroom, which can look great and is very durable, but the vinyl is likely going to be cheaper.

Saw one hauled down the highway recently (with below zero value, counting disposal)..For a shield, maybe show them what a duplex sold for ten years ago in your area versus a mobile and where they are today in terms of appreciation (you could also make a good case on cash flow, especially with park/lot fees, but for a simple "wow" figure, that may do it)...The ones on a lot that are affixed to the ground do better here, but the ones in  the parks are personal property here (and I suspect elsewhere) and you get killed on the lot fee, and the construction is not ideal for durability in my climate.