However, with the 3 private placement sponsors I have invested with in many deals (soon to be 5), there is an air of professionalism that is palpable.What is your experience?

During 2009 when I bought my condo in SF, to supplement my vacation income, I signed up with a company called Air BnB to rent out my place when I was gone.  

You may have had discussions about living there, but I bet you didn't have discussions about air compressors, circular saws, and drywall demo. 

A new air handler isn't much more than that.

Example: tenant calls me yesterday to tell me air conditioner stopped working.

It could easily sleep 6-8 people with air mattresses. 

Ask her if everything is okay .Hear her out listen even if it’s irrational even if she’s a lunatic .don’t say much keep repeating” I understand your point” “I see what you mean  “ let her air out her grievance and see if some compromise can be made with her .

But I’ll include a link so you can check for yourself. https://www.toptenreviews.com/home/hvac/best-central-air-conditioning-units/amana-review/

In addition to the association allowance if you plan on doing Air BnB or short term vacation rentals don't forget that there is an additional Transient Accommodation Tax, bringing your total tax requirement to ~14%

He quickly moved to acquire a second SFH which he operates as an Air BnB.