I am pretty green to RE so I didn’t know about these and he never explained.  

Between the patio and the street I have lots of lush green tropical foliage, giving more privacy from passers by. 

I've read several more of Robert kuisaki's books, also David Greens and Brandon Turner (currently reading "The Multifamily Millionaire v.

I liked David Green's answer the best which was offer a credit. 

I have absolutely no reservations about how green I really am!

Many people can’t see beyond a green colored rug.3) location shifting in value—old school owners giving way to new population, ideally young professionals4) value add-can you make. 2 bed into a 3 bed.

I recommend David Greene's book on BRRRRing and J Scott's book on Estimating Rehab Costs if you need more guidance. 

David Greene did a great job breaking down the BRRRR strategy here.

We discovered the humidity problem from one of the tenants seeing a small amount of green mold (this is a fairly new tenant).

You are green and don't know what you don't know.It is important to get a good agent who is familiar with the area and the rules around STR's.