Mortgages be too damn High!

This is super high level and just a rule of thumb.

The numbers make sense but googling that area, the crime rate seem high. however, its high for that entire area near temple university.

Your points seem a little high but again it's an $80K loan so its a price you have to pay for those smaller loans.  

Now she complained the issue of toilet fill valve which caused unreasonable high water bill and claimed it belongs to wear and tear and a plumbing issue.

I want to get started investing in rental properties where I live (NY) before I venture out of state but I have 2 major concerns about NY: tenant laws and high prices.

Bandit signs are inexpensive and effective, if you're in a high traffic area.

I've often heard BP use the terms "Cash Flow markets" and "Appreciation markets", and they are generally referring to low-priced markets as "Cash Flow" and high-priced markets as "Appreciation". 

I'd start by assessing their performance - compare the actuals to the airdna / bnbcalc projections, assess the ratings and reviews on the listing.

Which can cause higher risk of the deal falling through if any of those parties fail to perform.