Being out there in the markets, I think you're going to be hard pressed to find a good line of credit.

Tons of trash left in the home and in the garage along with personal possessions - toiletries in bathroom, decrepit looking washer and dryer in basement (not hooked up and seemingly long unused ), old couch, old truck tires, vehicle battery, TV stand, mower and vac in garage. 

If it were me, I would proceed with eviction immediately and try to cut my losses.I'm not an attorney and I don't know what your relationship is with your PM but I would consider pressing them for lost income.

Your tunnel reminds me of this silly old TV show:https://www.youtube.com/watch?

Typically speaking I see $20 a foot for everything (TV's, sheets, towels, etc incl). 

Think pressing this with legality will be cheaper? 

If you can stand outside the door and clearly hear the TV or Radio or Loud Voices it's to loud.

Hotels everywhere have pressed local governments to put the squeeze on STRs and I can't imagine the Vegas Big Boys aren't fighting them tooth and nail.

It seems legit - doubful all the web press and marketing etc. is solely made up. 

ACV is a cheaper policy that inputs depreciation into the equation where you most likely will not get back to what you had (let's say you have a $10k TV and the insurance company believes that Television will have a life of 10 years, each year the actual cash value will depreciate 10% so a stolen TV in year 5 would warrant the insurance company to pay $5k).