I was going to suggest you could leave a BRIEF, unemotional response to the review, but then I looked at your profile and saw you've already left a very lengthy response that actually draws MORE attention to the person's review than it would have without a response. Bummer for you. For future reference, a brief, "Thanks for much for taking the time to review. We're sorry you didn't enjoy your stay at our Airbnb. We employ a top-knotch cleaner to thoroughly clean between guests and feel our vintage furniture adds to the charm of our cottage. We will certainly take your feedback into consideration for future reservations." Short, sweet, diplomatic, and future guests will be able to see you are professional.