Honestly, if you are not a tax professional, more harm is done trying to "educate" on taxes than by simply saying "I'm not a tax professional so I can't speak to that issue, let me refer you to someone who can help".  

The plumbers and electricians that are used by property managers are typically overpriced and not reliable, and cause more harm in the long run.  

4) Harms your credibility.Do you see Nike putting up bandit signs?

You may have a case against them for the financial harm, but it may be less expensive to just default on the loan and let the seller foreclose.

The entitlements unto person, in VAST majority, we are talking 98%+, are not only completely wasted economic/tax dollars, because they go 100% too consumer spending, it is actually HARMFUL to the economy, and community, including that family.

This is after three years, and one million dollars defending myself and a whole bunch of people trying to trash me that the same California Judge has found there to be no harm, no financial damage, no fraud, no misrepresentations.   

My point here is I have done class Ds since I've been in the business and I don't anticipate dying or being seriously harmed.

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

You harm the reputation of the company if a guest has a poor experience and decides not to use AirBnB again.Photos are everything and they promote properties with good photos.... 

No harm, tho'.