Many of also argued that forcing out many STR's will impact our tourism revenues, which we're very dependent on, as many travelers won't come here if they have to stay in a hotel.

It's not what I would call a super rough, probably different street by street, and would most likely depend on the neighbors right around the property. 

Whether the lender decides to do anything, and exactly what they decide to do depends on the lenders particular strategy, target ROI, risk tolerance, current interest rates, interest rate of subject mortgage loan, etc. 

With investor's properties, depend on how risk averse they are, I fall under either just follow their criteria or maybe coach them my insight if I feel they are open to ideas.

Providing relocation assistance to tenants, for example, if I want to sell the property or move back in - this can range from one month's rent to thousands of dollars (e.g tenant has a disability, minor children, elderly it will cost you more), depending on the city.

Expect rates to be higher than "typical" financing programs - right now, I'd plan for at least 8%+ depending on the whole scenario. 

All depends on what your goals are and what market fits your game-plan/criteria 

I only buy in vacation markets that depend on tourism to keep their area going.

If everything in the neighborhood is 90 DOM (market dependent)..

Henry the returns were 12 to 17% depending on amount invested and how long you locked up. the other thing that this fund invested in was  defunct brick and motor like radio shack  stien mart etc with the idea that they were going to turn those old name brands into  on line sales .