Things change frequently, and some banks have more strict standards layered on top of conventional guidelines.

I use strictly Pay or Quit notice for non-payment, no warnings.

While it may not strictly be a prohibited transaction (like your IRA making a loan to you would be), it violates the guideline that your IRA cannot engage in any transaction that creates a benefit for you.Perhaps I misunderstand what you're proposing.

I have been told there are strict rules here about "finders fees" and licenses.

Chapters 20 through 25 are about strictly about buyers...

From what I can see online, there isn't a strict definition for bedroom.

The major drawback I can think of is higher HOA fees due to salt water damaging exterior building and heating/cooling units, as well as higher flood/hurricane insurance, or higher reserves needed for potential future storm damage.Some HOAs have strict restrictions on rentals near ocean to protect long term owners. 

You are talking strictly conventional mortgages, correct?

You'd also likely have to deed the properties into the name of the LLC to really keep everything separate and get the benefit of the asset protection, not to mention you'll need to keep all of your funds strictly separate.

The landlord tenant laws here are very strict!