but didn't get chosen.

All it took was about 6,000 posts and 9,000 votes.You've chosen to invest in an island and cater to vacationers. 

So, to summarize your long winded whining, Cash Flow is a bad reason/way to invest because:1 - You have chosen a market to invest in, that has poor cash flow2 - Nobody can successfully cash flow because you can't do it in your market of choice.

For the record, I have absolutely nothing against multi-family investments, though it is a path that I myself have not chosen to pursue up until this point.

@Diane G.Are you not able to reject them and tell them that a more qualified tenant was chosen?

This implies items were chosen to minimize maintenance/cap ex.It takes effort to sell.I takes effort to buy right.  

They have chosen to be law abiding and deserve a home for their family that is free of know potential dangers. 

They accept everyone, you are not chosen if that's how they play it... it's just about the $ to them, it's a #'s game the more they people they accept in the more $ they make.

I have chosen to pick up a mold test kit from hd.

Document.Never tell someone why they were not chosen as a tenant - or employee.