I'm really hoping you have this resolved by now. From my experience it is a tough one, as here in Ontario, Canada there is no legislation covering vacation rentals as there is for long term rental. We had a similar problem and eventually had the renters evicted by a bailiff. The whole episode cost us over $20,000 in damage, lawyers fees and lost income. This is a grey area and we were unable to recover any of the money as the guy never turned up for his court dates, and our legal fees just got too much so we gave up.
I would love to hear how this ended up.
Heather Bayer
Cottage Blogger