Challenge: It's in a neighborhood (no HOA), and renting the entire property (sleeps 25 in total) caused problems in the neighborhood, due to noise and parties – so we only rent the separate cabins now.

Sounds like I'm late to the party.

Instead, build a solid bench of 3rd party vendors; HVAC, plumber, handyman, etc..When considering whether or not to make a hire, most of it depends on how many hours you can dedicate to that individual each week, at least when hiring a maintenance tech.

Hopefully you can state simply (and truthfully)  at the end of the showing that you have other interested parties to whom you are showing the property and will let them know in due course.  

It's a lot easier for both parties and cheaper for the company.

This used to be a near-impossible task for a company like BiggerPockets, but technology and 3rd party solutions are getting better.

That stopped when I stopped using third-party cleaners, but I also started to only leave enough for the stay.I use a small Dawn hand dish liquid that I fill between guests and larger hand soap dispensers in the bath and kitchen that I fill between guests. 

I am not sure if anyone else saw it:"Full and Liquidated Damages": This limits both parties to just the damages stated in the contract.

If not you might be stuck with the work and the commitment to doing it since the city would be the ruling party.

The 3rd party wasn't able to screen the applicant.