@Chris269
"If it was another guest, it may be possible that if they left their review in their native language that it is moved further down in your list of reviews, but topmost when choosing the web page for their particular language."
I recently had Portuguese guests and they left their review in Portuguese. When the English speaking community look at my listing this review is moved to the bottom of the list. If someone in Brazil or Portugal take a look at my lisitng in their native language, this very review will show at the top.
It is best not to respond when upset - better to sleep on it and leave a factual response. A lengthy and emotional response could leave the impression that you are not very professional and it also draws attention to the not so good review. Such things tend to backfire.