For a better user experience, assign a category to location data, according to type of location is highly recommended. Each category should have a unique icon image so they can be easily visualized on google maps and visitor should be able to filter them by category. Using this google maps wordpress plugin, you can achieve it very easily.
To display category listing with ability to select multiple categories, you can follow below steps.
You can buy this plugin from codecanyon in just $28 and email us at email@example.com or create a support ticket using helpdesk for any type of query or help regarding this plugin.
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We will be glad to discuss any of your needs related to our wordpress plugins . if any of functionality you'd like to see in products, you can reach us by via email firstname.lastname@example.org.