I have purchased an off-market property from an investor who now wants to sell the rest of his portfolio.

Your policy should be that the applicants have an SSN or ITIN, period.

I had 2 weeks to pack my stuff and leave the rest behind.

But, if you do evict AND they request a hearing then the judge MAY interrupt the partial payment as acceptance of rent and therefore you would have to start the process over at the beginning of the next payment period.

I’ve come to think of this period of my life as my real world MBA, and view my laundromat as a fantastic starter business.

I agree, its easy to say oh I want cash flow, but ultimately, most of the gains are made with appreciation and principal paydown over long periods of time. 

There are two large community pools, which are heated during the cooler months, tennis and pickle ball courts.The minimum STR period has been reduced from a year to six months.

You don't need to know everything to get started; you need a foundation to build on, and the rest will come through experience and then refining your education.You can build a basic understanding of investing in 3-6 months.

I have been tweaking pricing periodically and viewing comps to other cabins in the area.Will definitely look into Trip Shock and the affiliate/ partner options. 

You have excellent advice here from some people who didn't just get their knowledge of investing through a low rate, real estate risk off period.