@KayKay1....Sorry to have to say, but as you can see if you go back through the pages of the forum this is a re-curing problem! The Resolution Centre is not so much a resolution centre as a damage minimisation centre as far as hosts are concerned.
For your future hosting try and put a short term insurance policy in place to cover these sorts of things. There are companies in the US who will accept hosting insurance but I am lead to believe they are expensive.
You must have insurance to cover major issues but these days, if you are going to host you can make a considerable amount of money out of it so, it is wisest to make your space as 'guest proof' as possible!
I would suggest you try to minimise your risk of damage as much as practical.....use kitchen bench-top protectors, 'Blue-tac' down valuables that may be in a position to be knocked over, put mattress protectors on your beds, consider the use of alternative floor surfaces to carpets. I know plumbing is a difficult one but, have more inspection points built in so you can remedy blockages easily yourself. I have five inspection points between the guest cottage and the deep drainage, each with a pressure water connection and every so often stuff will get flushed that shouldn't but I have never had to call a plumber when a blockage has occurred!
Increase your listing charge by 10% to cover 'minor' damage that that guests may do. Not every guest will create a problem but by charging that little bit extra, after a while you will have a small bank of maybe up to $500 of funds to cover these occurrences without having to run the gauntlet of dealing with the Resolution Centre.
I know, others will say it's hard enough now to get guests without hiking the price further but, one way or another you are going to have to pay it anyway...If guests want to use your property, they will come!
All the best Kaykay...cheers.....Rob