A thoughtful, competent, and considerate Airbnb host elevates a place from an few nights accommodation to a memorable treasured experience. I have had the pleasure of staying in several such Airbnb locations. Places where, hosts were an utter delight. They were welcoming and friendly, clearly caring about providing an enjoyable and memorable guest experience.
If that is the experience you desire, definitely keep looking to one of the many other Salt Spring Island listings.
That being said, not everyone is looking for an "experience", and
there is much to be said for simple accommodations. A place that gets the job
done and allows one a functional (safe & secure) but unpretentious and affordable vacation base. Sadly, this place is not that either. If you prefer a perfunctory box marginally better than sleeping in your car, and you are willing to pay luxury prices for basic accommodations, then this is truly the place for you.
In our host's defence, did we arrive at a difficult time? One
might speculate that the cottage was not quite finished, or had just
fallen prey to looters or burglars, or used as a portal to the underworld. It appeared that someone or something, had taken the bed frame, window coverings, window screens, closet rods, kitchen faucet handle, some light fixtures, and the fasteners holding down one of the porch stairs. We offered our concerns to the host, who phoned us from the mainland, but he seemed unsurprised. I'd
suggest asking the cleaners if they saw anything suspicious, but I
don't think they would have, as they don't appear to have spent much
time there recently.

I trust that these things will be replaced soon enough though and even a modicum of effort would make this place an adequate sleeping box.