A well written management contract should clearly spell out what is expected of both the PMC and the owner, to PROTECT both and avoid misunderstandings.

In a “nutshell”What can work - partnerships where each person brings a different necessary asset (knowledge, experience, time, capital, credit) to the table, the responsibilities, rewards, and expectations are clearly spelled out, legal documents are created to head off disagreements, and the parties are compatible.What doesn’t work - partnerships formed by two or more inexperienced people looking for “comfort” rather than going it alone, and anything other than the above. 

Once I had their agreement I called the guest who refused to answer, so I called the cabin phone and let it ring for like 2 minutes until someone finally answered.I explained they knew the house rules, they signed my digital rental agreement that clearly spells out max occupancy and they signed up in the OTA with 7 guests, but only listed 6 people on the digital RA.  

When dealing with service providers, you can easily be shocked if you did not discuss pricing upfront, and even if you did you could easily be shocked - LOL.What you needed was a letter of engagement spelling out the fees that will or may be incurred - in detail.  

A well written management contract should clearly spell out what is expected of both the PMC and the owner, to PROTECT both and avoid misunderstandings.

Also spell out as much detail as possible in your scope of work with the contractor, you cannot assume that they are thinking the same thing as you when it comes to finishes and material choices.  

This should also be spelled out in your lease, which, after this situation, you will likely want to update with more specificity to address this type of scenario.

Your lease is a very important document and it should spell out a lot of rights - both for you, as well as your tenant.  

Hopefully you have a lease that you can point to that spells out things like "quiet enjoyment" and no unauthorized persons living at the property for more than 2 weeks, for example.

Nah, please don't bring up 'you owe me' AFTER the deal is done.Next time, all this stuff should be spelled out in the agreement to form an LLC, or shared in the LLC percentages of ownership/partnership.Good luck.