His comment to me was that if there is a common area to put washer dryers, put in coin-op ones and charge the going rate.

Or on the other side of the coin, another person may love their job and not want to quit it.As I said in the original post, I think somewhere between the two extremes is the place to be for most people. 

If you don't specify how the tenant pays, you can put up with all kinds of stupidity; I know of an instance where a tenant delivered a big box of coins to the landlord for rent payment. 

There are 100's of these types of funds available (some REIT's some funds) that are available.Of course along with returns please make sure to consider risk.Does anyone publish ratings for REITs similar to the way Weiss publishing ratings for banks and stocks and cryptos? 

In commercial, the coin flips, and things heavily weight from the financial side of things.

Also I pick up the coin op laundry money then on the two buildings that have it.

Yes, it is an easy go-to to say the area is really rough, even often coined a "war-zone" at this time of "things" happening, but as those of us local pro's know it's been decades long that the area has been like this.

Rental income acts like a steady stream of coins filling your treasure chest, providing a reliable flow of cash even when times get tough.

The other side of that coin is the option of putting your money into having great bones and middle of the road finishes knowing the property will have wear and need upgrades before you sell anyway. 

For example, you can utilize population statistics from World Population in review, this will give you an idea of population with current growth trends factored into them, then you pair that with Census data, and/or local government reports, and you can get a pretty great understanding, while having both sides of the coin.