The notary notarized the signature for fake lender LLC with no signing authority, resolutions....because the company didn't exist yet.

It’s always best to attempt a resolution through communication before pursuing litigation.A perfect example of this occurred when a seller backed out of a contract, and we chose not to sue for specific performance for market reasons.

Did you ever get a resolution to this?

Make sure you document everything and you can submit right through Airbnb's Resolution Center.As far as guest screening goes, there are some services out there but especially at scale it is cumbersome and costly. 

Replace the Property Manager🚨 Immediate Warning – Send a final written notice demanding resolution.

That goes above and beyond standard landlord obligations.Since you’ve already offered to cover their additional utility costs, I’d stick with that as a fair resolution.

Feel free to give me a call and happy to chat through any resolution  

Working with an expediter and architect early in the process can help determine the cost and timeline for resolution.

I have attempted to address this matter directly with you in hopes of coming to a fair resolution, but you have completely ignored me.

Either can work, or either can be a huge pain, but that's the reality of common area ownerships.I've worked on some small 2-3 unit condos like this doing the condo plans and the CC&Rs have always included provisions for financials, budget etc. as well as dispute resolution.