@Kate J.First, your agreement is between yourself and your tenants, so they remain accountable for the rent regardless of what their (illegal) sub-let does.Second, you should have already served notice on your tenants (worded to included all occupants) for late rent and, by this point in the month, have begun the eviction process.Depending on the wording of your lease and local tenancy law, you should have also served them to cure the unauthorized sublet.Now that you are really in a jamb, you may consider resorting to use of a carrot (cash for keys) to get this fellow out ...

The economy is ramping up in that area to support the massive drilling/fracking that is to come with housing being a major player.

Zoning is flexible within the town (it's a tourist/resort town and the city encourages additional units on lots).  

With all of the hype and growth the bitcoin has received lately, I am surprised that major real estate players haven't discovered a way to funnel crypto currency into real estate investment deals.

I disagree that hard-money lenders would be a last resort.

Given that we inspect single property DSTs before approval, it is entirely possible that a Sponsor can be approved, but an individual offering may not.It's vitally important to know who you are working with, and have the history of the players involved.

My mother has recently fallen on hard times and needs to either sell her property or do a reverse mortgage, which I feel should be a last resort.

It took me a while to realize this, and I hid my AirBNB listings for a while before finally bringing them back on full time.My properties are in the mountains, at or near ski resorts, and 90% of my bookings are currently from VRBO.

If you know other better resort properties with similar size (or bigger doesn't matter) of house and price range, please let me know.

Only offer yours as a last resort.