Firstly, it allows you to quickly and easily add the Google Map to your Joomla 3 website. Besides, it allows you set your address information in a HTML format on the map module with a bubble. It's also could be configued to be responsive way with being able to specify the width as a percentage.
As a plus, we also have created many demo from our joomla theme, you could check it here:
1, A Wedding Joomla Template
2, A Travel Joomla Template
4, A Portfolio Joomlatemplae for designer
5, A Music Joomla Template
The bottom line is that it is totally free to download. Now you could install it on your site to learn more details.