I was told by a friend that his dad who runs an appliance business has "keys to every type of washer/dryer coin box".

Buying rental properties is investing in a business and a place to make your money and time work for you.

It's easy to bite off more than you can chew in this business and that's especially not a good idea for your first deal.

You have a job that keeps you busy, but you want to start creating wealth through Real Estate.  

I've been toying with the idea of adding an ISA to my sales business.

You have every right to be outraged at the offending party and that's the tenant.Stay focused on what matters and that is getting back in business. 

Holding company typically if you have multiple companies like a property manager, own property and other businesses. you will end up spending more per year on accounting and state stuff than what you make on your rentals. 

Business loans typically won't let you purchase a property if you read the fine print.

If so they may have a real estate license or they may work with an agent that relies on repeat business rather than a one-off purchase. 

It is important to remember you own real estate in the Poconos and you are choosing to operate a STR business.