Hello!
That is not currently possible with the GD Popular Post View widget, but you might come up with a similar solution using a Location Manager shortcode.
GD Popular Posts View currently supports
%posttype_singular_label%
&
%posttype_plural_label%
We are working hard on new versions and will consider adding a location option in the future.
You can submit a feature request here: https://wpgeodirectory.com/requests/
You could also try using a Location Manager shortcode: https://wpgeodirectory.com/docs/location-manager-shortcodes/#current
You might, for example:
Enable shortcodes in widgets
Add the Current Location shortcode to a widget with the text you mentioned
Place the text widget above the Popular Post View widget
Hide the title of the Popular Post View widget
You can contact a GD Expert here for help with that kind of customization and personalized setup:
https://geodirectoryexperts.com