To set your location, go to theme root directory, open js folder, find main.js edit it with text editor (like Notepad++). Change the data-position-latitude and data-position-longitude. First one is latitude and second one is longitude. To find your locations latitude and longitude, click here
HTML Markup for Google Map
<div class="google-map">
<div id="map" data-position-latitude="48.858370" data-position-longitude="2.294481"></div>
</div>
If you want to change styles of the google map check this site