That’s super high level though and maybe still not the best measuring tool for analyzing markets. 

Yield measures risk.

"If you're not measuring, your just playing."

Success can be measured by the joy in your life and the amount of your free time.2. 

If not, why are they allowed to ask such in depth questionnaires, talk with providers at will, and take many in depth measures to ensure that:1) not only is there an actual disability but also 2) that there is an actual need / documented "nexus" for an esa? 

The PV company advocates for wiring all the PV panels in series and then letting any excess electricity from the panels balance equally through all three meters - that's technically the most cost effective for the whole property, but would mean I need to install a bunch of extra hardware to measure actual electricity usage. 

My friend (who lives in the area now) and I are considering buying a very basic, 1 or 2br1bath condo that we hope to maximize rental income through 30+  days medium-term rentals- since I lived there and even my last visit earlier this year, I actually didn't realize how stringent the str regulations had become, and I still don't know how small-time landlords actually deal with the laws now.

You're sacrificing cash flow (which actually produces a measurable return on your investment) for appreciation. 

Upon further investigation and additional measurements, I am thinking about the possibility of putting them in the "spare room" on the other side of the bathroom.

Measure your progress, reward yourself for even tiny successes.Watch YouTube videos – Bigger Pockets, *************, Grant Cardone, Ted Talks, Dan Lok, Tony Robbins, Robert Kiyosaki, etc. and don’t stop until you’re succeeding in creatively maneuvering yourself – better - leveraging yourself into a better position.You can do it, somehow you will find a way.