This is a lovely house, but it requires some attention to make it a lovely home.
The mattress in the second bedroom should be replaced. For anything more than a few nights, you'll likely prefer the couch. If you already are predisposed to having back issues, you're done for.
While we were there, the shower did not drain without waiting for an hour. With 4 adults getting ready, this was completely unacceptable, and could not possibly have been a "new" issue, unknown to the host.
The pool is lovely, but if you're hoping to lounge around the pool, you'll be disappointed that there are no suitable lounge chairs. Who comes to the Caribbean, rents a place with a pool, not expecting to lounge around it?
Kitchen supplies are lacking. I would never expect to have to buy aluminum foil, cling wrap, and the proper coffee filters. (The filters supplied are not correct causing the filter to collapse, grinds to plug up the coffee maker, and the basket doesn't seem to be removable, meaning you have to rinse the whole thing in the sink before brewing your next pot) Is this REALLY how I want to start my day?
The knives are of such poor quality you can probably let your children play with them without fear of injury, but you might get hurt using them, and the BBQ is of a similar quality to things I personally throw away.