When writing a review mention your city and or state. Sort of "It was my pleasure to have the Blah family in my Brooklyn home." It's a good way to state your location for other people reading the review and maybe wanting to come to your city.
That's an interesting idea, Evelyn. But the review is embedded in your listing. And since the listing has your location on it and the potential guest has already indicated an interest in your city, how does it help?