There can also be chemicals in the treated lumber that are harmful to the environment.Invest in a good screen or built in door system.  

I'd recommend interviewing multiple PM's and seeing which one fits your style and expectations.

Both units are approximately 400 sqft, "yurt-style" cabins with large decks.

It might be that this couple that owns the house is just getting their feet wet with having someone else managing the property and they want to get comfortable with your management style as being what they want.

It was a 1962, ranch-style house with blocked galvanized pipes and a busted water heater!

There are a lot of high character folks who get sucked into garbage Co-GP style guru programs.

So, overall, I think these four areas are very distinct in the style of life they offer.

What is not helpful is the assumption that some responders made that the root cause is the PM's communication style was not to my "liking".

I do not know the OP nor her teaching style, her techniques or capabilities.

Views, indoor pools, game rooms and proximity to attractions.