@Walter EdingtonYou need to eliminate the humidity but more important how to alleviate the humidity in the future.  

He said he had about 200 to 300 tenants in total.He is likely forgoing hundreds of thousands of dollars in income by canceling April rent.His only interest, he said, was in alleviating stress for his renters, even those who were still employed and now working from home.

@Michael Craig at a time like this asking anything that will help alleviate your concern, you may not always get an answer; but asking rarely hurts.

Its the seasonality, but I suspect its certainly something to do with COVID unfortunately -- i also have 3 units vacant, but im upgrading them now, and hoping by mid summer things will alleviate.

It is my hope that most of those fears most of us have will be alleviated by the stimulus/bailout package. 

It seems like managing the business is your main issue, and this would alleviate that.

That is scary to me...yep. same here. balloon payment at the end alleviates nothing.

This effort will not only help to alleviate individual financial stresses, but when repeated by many our collective voice becomes so loud we can't all be ignored.

Does anyone know anything or have any ideas which could help to alleviate my dilemma?

This would alleviate finding a tenant and find a lender who will loan you on the basic of potential rental income.Just remember that lenders use 75% of the rental income (not 75% of your rental profit/loss).