I took the time to seek out options on my own vs paying for a service. 

If they don't pay in full by the 4th, I charge a late fee of $100 or 5% of the monthly rent, whichever is greater.

the Rentvine team has been real helpful with helping me set everything up and linking my bank accounts as well as screening services from Transunion. 

I've not heard Hospitable was the #1 STR management software.

Yes, you can deduct special assessments on your tax return if the property is a rental.

Me, my wife, and our dog are lived in one unit and rented out the other two.

Given my background with managing out-of-state properties, I’m confident that I can apply my skills to the MTR space, but I wanted to reach out to the forums to gather insights from anyone who manages an MTR property out of state.While I don’t foresee significant hurdles with managing an MTR remotely—provided I have the right local connections and a solid team in place (which I do)—I’m always open to learning more from others who have navigated this path.If you’re an out-of-state MTR investor or have experience with remote property management, I would love to hear about any tips, strategies, or lessons learned that you can share.

best way to get them is through a lawyer or attorney probably

Absolutely any market on this planet... so long as you get the property under contract at the right price point(discount) 

State's also have there own estate taxes which are often quite different from the federal estate rules and laws.