They are elderly owners and self manage.

At the end of 2020 our current tenant at that time passed away she was elderly and died of cancer sadly.

There are several communities that provide help to the elderly and you can definitely be a part of it.

For example, your elderly neighbor who watched you grow up as a kid and now wants to help you because they don't have any heirs and could care less about the money?

Your intentions may or may not be altruistic, but others (including the courts) might easily see this as elder abuse or similar.

People going through a divorce, somebody new to town, recent college grad, downsizing elders, disabled people, are all good candidates for a single bedroom unit, but aside from the downsizing elders and disabled tenants, they tend to be 1 year or less tenants.I think you need to focus on the numbers and decide what is best for you.  

It is an owner occupied duplex with an elderly couple living downstairs and their daughter living upstairs.

You have an elderly aunt and you go through things that you want people to have when you pass, it's customary to wait for them to actually pass; not to steal their jewelry before they are dead, which she did.

That's one motivating factor as elderly people tend to want to simplify. 

I am purchasing an investment property for my elderly parents to retire in.