Hi Paul,
I know exactly how frustrated you are with Airbnb. The Resolution Center-->Host Guarantee favored my guest in a similar case.
My guest broke the NO SMOKING house rule & clearly left cigarette burn holes that went completely trough the bed comforter & table linens. In addition there was a large water smoke pipe, trash pile up, red wine stains, smoke smells, damage to furnishings that were not wear & tear, & guest completely ignored my request.
After making a claim well within the time period required after the guests checked out & subsequently meticulously submitted (over & over) all the requested documents (photos, receipts, estimates, links, detailed description etc..) my case was suddenly closed. It was closed & reopened 4 times! After one months time, I was awarded 1/3 of the damages from the claim.
I am disappointed in the way Airbnb dealt with my case & they really made it difficult because:
1. It kept getting handed off to different representatives & departments. At least 20 different representatives.
2. There was no follow up unless I strongly requested the claim be looked at closer.
3. Parts of my claim were never even read by Airbnb as their reason to closing my claim was I didn't provide information requested.
4. Information in the original claim to INVOLVE AIRBNB was never reviewed or looked at.
5. Lack of transparency on their part.
6. It took a month for the decision that amounted to less than the deposit I require, even though damages were more than that!
Overall my reservations have gone very well & Airbnb has done a sufficient job at addressing my concerns but this experience made me re-evaluate how trusting I should be to leave my apartment in Airbnb's hands. Additionally I have learned that I may even need to be more strict with my vetting. Hopefully not to my detriment (catch 22)!
If anyone would like to share some insight please do so. Maybe I can learn to be a smarter host.