@Joe-And-Patty0 You can respond to this person's review if you want to but keep in mind, responding, especially a long response, usually brings more attention to the original review. Many hosts feel that a response is necessary and wind up highlighting the very review they object to .
I took a look at your listing and this one review looks kind of silly amongst all the other great reviews. In time this particular guest's review will drop off the 1st page and more glowing reviews will be ahead of his. I would imagine many prospective guests would feel like this guy is an idiot. If it were me I'd let it go and stop corresponding with him.
As to your question about whether the guest can publicly respond to your response, the answer is no.
Maybe other hosts will chime in with their opinions here.