If you want dreadful and inhuman, check out what we have now.
Actually, I will advise against it. From my own experience, my first visit to such a place, one of the “better” ones, was to drop off some small items for an older woman neighbor.
Very institutional, with painted brick walls, its corridors full of old widow women side by side on wheelchairs, staring blankly into space, or the painted brick wall in front of them, or asleep. An absence of stimulation, a feeding ground for dementia.
A few new ones, either completely confused or upset, wanting desperately to go home.
At that point I resolved that if I was ever in such a situation, that I would bug out to rural Mexico, where I could have a place to stay and people to take care of me, and when I died I would be given a nice funeral and at least someone would miss me. And be buried in an unmarked grave against some nosy American government employee who couldn’t close my dossier until he had proof that I was dead.
An individual choosing to ‘post-retire’ in a lower-cost location, I could understand.
But the US shipping its indigent elderly to a third-world holding pen until death sounds absolutely horrid.