It's affordable and offers strong cash flow potential.

Seeking to invalidate someone's perspective before asking for details is not productive.

Real reviews from real guests are always going to come across as more genuine.After you build up reviews, the unsaid truth is that you can then afford a less-than-stellar review.

People carry too much debt and even if the debt was forgiven or paid off, incomes don't match affordability. 

You might be able to afford a "better" property then.If you invest somewhere else in a vacation rental for example, you might also discover another place that you might like for retirement as well that might be more profitable.

High property prices mean fewer people can afford to buy, so more people rent.

I see a few abandoned nursing home type places in rural areas, and always think as I drive by, would a good repurpose of them being senior living, or veteran living, or just plain affordable housing living? 

Beware of people with “something to sell” stating how great their product is.

If that makes home buying affordable without putting you in a pinch financially, go for it.

I was further thinking of using 2-person LLCs (my wife and me), due to the greater liability protection they afford over 1 person LLCs.