Hi @Theresa21 What a nightmare guest! I am so sorry this has happened to you. I know what you mean about wondering if you have grounds for complaint when the offending behaviour isn't mentioned in the House Rules - but who would think they'd have to put "don't bring bikes into the house" as a House Rule?! Why would she think was an acceptable thing to do is beyond me. This guest sounds like one that none of us would want to host, so please do write an accurate review of her as a public service to your fellow hosts.
Stick to your guns, do not refund, and go after this guest for the damage caused - ask for an amount which will cover your replacement costs for all the damaged and broken items that you can document. I hope you took photos, be sure to include them with your message in the Resolution Centre. Get receipts for the replacement items, then scan & send them in too. Even if she refuses to pay, don't back down, Airbnb might side with you & compensate you anyway. This happened to me - the guest refused, but Airbnb paid for the stolen item. I know it didn't come from the guest, as rather than being noted as a "Resolution payout", it was called a "Misc Credit".
She has no grounds for complaint about you entering with the electrician - you did notify her. As a prudent host, you were conducting vital maintenance - what if there had been an electrical fire? This is your right & responsibility as a host - sounds to me like the guest was upset because you saw the state of things while she was still there rather than getting the shock after she had checked out & was long gone.
For your review, give her a thumbs down and then give a concise, non-emotional account of your experience. Someone had posted this here as an example & I saved it because it was so perfectly stated:
"while I was honored that guest x chose my house for his stay, it seems home stays may not be the best option for guest x while traveling. I was disappointed [[that she stored 4 bikes in my living room]] [[brought extra guests]] etc etc. I wish them well and hope they are able to find accommodations that are better suited to their unique traveling style going forward.”
Saying "better suited to a hotel" is also a good head's up for other hosts, but even a hotel might not allow this guest to keep her bikes in the room!
How to prevent a reoccurance - were there any red flags in your communication with this guest? It's hard to screen ahead of time when it comes to weeding out someone who stores bikes in your living room - not a question many of us would think to ask. If there's anything that gives you an uncomfortable feeling about a guest beforehand, go with your gut & decline. Best of luck with this, I hope that helps! - Karen