Helping my father to exit an 'investment'

[Jacob Vincent]

Hi folks, 

I'm here seeking advice.  

My father bought a property about a decade ago and just wants to get out of it and pay off his mortgage balance.  The property doesn't seem to have appreciated, but there is potential with the land and location (i.e. it is zoned for a second house, and backs a 19 acre orange grove).  

What would you folks do?  Should I post it in the marketplace here or try craigslist?  He's not going to do a subject-to or owner finance, he's old school and just wants the cash to pay off the mortgage balance.  He has an agent, but they're as responsive as the gravel on your driveway.  He has also tried renting it out over the years, but tenant quality has been low, and the property managers that he's hired, have given up.  The property management count in that region seems to be very small. 

Thanks!
Jacob