There are a few main reasons to add a Google map to your website:
It helps customers or website visitors get directions to your business and saves customers the steps of opening a new browser window, leaving your website, and finding directions. Customers can simply use the map on your website.
Your business contact information is easy to find. The data an embedded Google Map provides is your business address, phone number, website, directions, reviews, and review stars.
A Google map can highlight nearby points of interest, parking areas, restaurants, theaters, parks, etc. Visitors can reference nearby areas if they are not exactly sure where your business is located.