Consider joining online forums or groups related to real estate investing, where you can network and learn from others.

Depends on the exact scenario but could be as low as high 6's with prepayment penalties. 

So instead of a data-driven and transparent approach to recommending commissions, more and more sellers will be entirely ignorant of what the prevailing and competing commissions are.

This was a new one for me so I replied: “Property rules are one thing, but If you truly fear for your safety, I would recommend calling the police department.

@Migeul Obramowitz high fees are expected.

When the money dries up, they'll abandon your property and leave you with a bill.If your property is capable of producing a greater return as a corporate rental or short-term rental, I recommend you educate yourself on how to do that and then do it yourself.

Hey @Nick Sansivero, I recommend reaching out to a QI like @Whitney Nash.

There are ratings, reviews, and recommendations from other BiggerPockets investors so you can find someone trusted.Give it a whirl and let me know how it works out! 

Does anyone have recommendations for an STR on-call service (not full property management), which will handle basic guest communication during their stay and handle organizing repairs (i.e. calling a plumber, HVAC, etc. ... not actually doing repairs themselves)?

Hence the ask.I have seen T-Value Online as a possible solution.