They've been in my SFH rental property for nearly 2 years now (and are staying another 2 years), take fantastic care of the property, NEVER have any issues with them etc. 

If the neighborhood goes from a B to a C do the tenants stay there and continue to pay me market rent for a B property?

@Raymond Y.Many times, once your bank is comfortable with your experience and deals they won’t check credit every time.

If you try to structure them with PML than the lender will most likely not be comfortable. 

It's important to have an agent or boots on the ground assistance to help you stay away from bad parts of the city.

From deployment and now flight school I’ve been constantly away from my hometown (which is my comfort zone) for the last 3 years.

Because of this, I always advise tenants that unless they have family they can stay with on a temporary basis, they are safer to give their landlord 60 day notice than 30 days.  

It would seem to me that most subscribe to the philosophy that rates will stay low indefinitely, in part because that's the new precedent, but also because the Fed has to keep them low to keep payments manageable on our national debt.

This is in the midwest area.The listing says that the duplex is occupied with two tenants who are interested in staying for the long term, and have a consistent payment history.I haven't gotten much information, but I'd say for the area, each tenant is paying 800 dollars per month.Now I am 21, and I have about 20k in the bank, and im willing to spend 15k for a down payment.

Also not staying up on local regulations of STR market.