Not the cleanest Airbnb we've been to, as the kitchen and kitchenwear were greasy, and we found hair in the bed when we arrived. Also, don't book this flat if you're afraid of insects and mosquitoes (as it is really close to the sea) ; I personnally didn't mind mosquito bites, but some may find it annoying. One last thing: bring your own toiletries.
That said, I would recommend Laura's place as it is a unique way of escaping all traces of civilisation and enjoying the nature of New Zealand in its purest form. While some people may find that not having a proper supermarket in a 130-kilometers-drive distance is stressing, to us it was heaven on Earth. When you are in Okarito, it looks like time has stopped, it's just you & nature.
So in the end, while some things could be improved, it was a good experience and we enjoyed our stay in Okarito :)