It was better than nothing, but I wouldn't recommend it.The pros of a ventless are: efficiency, no need for ducting, typically higher-end.The cons: more expensive, they put heat in the room (may not be a con), need to drain condensate, may have smaller capacity than conventional units.

There is a need to create a win-win for all parties involved, and the landlord or manager needs to be a leader in a situation like this.Whether you self-manage or use a professional manager, communicate with your team and others in your community to find creative solutions to keep moving in the right direction.  

Im not sure if the question involves with the virus going on  but if it is then I would hope that the tenant would let me know that he or she can't pay the rent  so then  I would communicate with the bank where I have the mortgage and request a forbearance.

If your agent/broker is knowledgeable about those types of products and has them available, it's likely more efficient for you to implement a single "master" policy for your properties.   

Technological advances creating more globalized economies and efficient means of communication (radio/phone mass adoption vs. internet and tech mass adoption).These are just some of the few uncanny similarities I am seeing between these time periods.

Even though the cash flow from a single unit is/was a little lower, there are efficiencies and appreciation that you will get in these properties instead of a single families. 

Be proactive in your communication.

And communication is key with what you expect of your tenants.  

Variance in between my top 5 go-to lenders is usually like 0.25% highest to low, usually there's 2-3 of them tied for first place (exact same rate, +/- $500 in closing costs), so you go with whomever the service/speed/communication leader is.Today, the high/low variance for those exact same 5 lenders is 1.5% to rate!

Even when I have an empty unit, I prefer scheduled tours- showing up on time and being able to communicate with me are part of my screening process, and I feel it's safer for me too.Hope that helps.