You cannot just enter their unit in this situation because of public health so your last resort is moot.

One of my clients  and another associate  have donated their units to health care professionals during the crisis.they specialize is short term housing for travelling nurses etc. 

She is also starting to have health issues and doesn't know how much longer she will be able to work at this capacity.

My wife is a health care provider and business has been great from day one.

So as long as they were healthy and able to work, they did great, and the moment their health suffered, they were rendered homeless.

If not and property is on well & septic, check with county health department if any "boil orders" have ever been issued for the property (Google what a boil order is if you don't know).

ORMC/Orlando Health Hospital just bought 51 acres in North Apopka recently, Advent Health built a $200+ million campus in South Apopka in 2017.  

In Illinois more than four homes requires a license from the Illinois Department of Public Health for areas in the county.

Trust me, it's way easier getting financing, and it's nice having the security of some income coming in initially (not to mention health insurance if you're not covered under a spouses). 

How well do you think they will rent out since there are no pool/spa/gated as in condos?