I then start advertising the unit with signs and on online venues, showing it to qualified prospects during those last 30 days.

Then just invite them to the meeting.  

Then you can read a more in-depth book like The Book On Rental Property Investing by Brandon Turner or The Unofficial Guide to Real Estate Investing by Spencer Strauss.2.

Dude then Airbnb the way to go! 

If a tenant calls in get them to a voicemail to leave a message then respond via text, email or the portal.

There are some better areas in that zip code, and then there are some areas that you should avoid, but overall I'd say that most areas are about a C/C+ level with some even being a B- grade.I hope this helps!

I did an eviction docket decades ago and when you file a case the tenant calls screaming bloody murder and then she calls the owner.

Obviously if you don’t feel comfortable doing it yourself then don't, but it’s a pretty easy process and there are tens of thousands of reviews of people who have also successfully done it. 

If you have great documentation W-2 type income and you are not looking for the exact same thing that everyone else is looking (eg, a condo in a tourist area that won't allow airbnb's anyway) or a small multifamily in metro San Juan) then you may be in luck. 

Neighbors can then let friends, family etc know about it even if they don’t usually look where mls distributes the info.