Intern for a major company in the area.

-what's interesting would be .... a loose-end different team brokerage like Exp , one team/agent is okay to have 2% retainer fee, the other one would ask for 2.5% and so on and other would offer flat fee, maybe they would have more agent internal competition inside.- this would impact large brokerage in expensive state like CA for sure.- but i think at the end it would create more and more local brokerage and reducing nationwide brokerage like re/max or exp or compass.

You can potentially be getting travel nurses, other business professionals, interns, etc.

We also work internally to manually check the numbers we get from the model. 

Also, the state of formation is likely where internal disputes would be brought among LLC members, so if you and a partner and/or spouse live in CA, you probably want to arbitrate in CA if the two of you had a disagreement.

In a similar fashion, if you can imagine how much landscaping and underground infrastructure is in a golf course as compared to the clubhouse, that will give an indication of why an extremely high percentage of the property's value is allocated to the land improvements.

I know a lot about this because we run a turnkey company in Detroit and have internal property management.

Lets face it, some 10 or even 20 numbers you could just write it down on a piece of paper or an old fashioned addressbook...You mentioned:  "I'm assuming PM collect the payments, manages the lease, track tenant activities etc." 

Areas near Uptown, the Charlotte Douglas International Airport, and popular attractions like the US National Whitewater Center, the NASCAR Hall of Fame and Bank of America Stadium are particularly lucrative for short-term rentals.3.

This community has a lot of knowledge, but international STR might be light here.