As my wife is a realtor, we’ve helped several people from Bigger Pockets find their second home/STR.

Check with your CPA, the people setting up your LLC and/or your QI. 

I always strive to be better.I've met many know-it-alls, complacent people and those that strive for excellence. 

HVAC move to attic to replace package unit and other side replace fan and heater for about 20k8. redo plumbing work 20k9. spent 10k to fix sagging floor issues by putting concrete blocks in crawlspace.There is big neglected strip mall in back as attached with loud noises and some weird smell of tobacco etc. also has big dogs barking at people even if I go to the corner of my backyard lot.There is one bad neighbor who has big dogs always barking who elevated his backyard and rain water runs naturally towards my sideBig trees other side in neglected waste land which I think belong to strip mall owner behind and city also pushing some rain water in to that waste land.I am in dilemma now1.

Since there are 3 people living in this condo sharing the kitchen, I am not able to pin point exactly who has been doing this even though I have some idea. 

And I don't think it is as clear cut as people are saying.

As a professional property manager for going on 20 years and a real estate investor, I still encourage people to manage for themselves. 

The challenge with unsafe areas is (1) potentially higher cost of maintenance such as broken windows, etc. and (2) this is by no means meant to be discriminatory but anecdotally from people I've spoken to the challenging tenants tend to be at the lower price points.

Thanks Ryan Dossey I also like to see the before and after pics that people are willing to share. 

Working with me can very much turn into a long term engagement for the right people.