Did you manage to find a solution to this? I saw that you end up inserting a static screenshot of Google map in your website.
If you are looking to couple the map with a store directory, please feel free to try out Storefolio Retail Directory. I developed this app so you can add and manage multiple retail locations in a photo-album way. It also comes with a store filtering features, which makes it a great feature to go side by side with a map.