This is probably one of the best Google Map plugins I've seen in the WordPress repo. The plugin has a great, simple interface for building and customizing maps. Once everything is created, you can easily drop the shortcode anywhere on the site.
Overall, this plugin is near perfect.
Some ideas for future updates:
When tweaking map settings, would be great if the map preview was the actual size of the width and height specified in the settings. It looks nice the way it is, but centering the map in the right position is difficult when the preview is not accurate to what gets displayed.
It would be awesome if this plugin could use percentages for responsive maps, or some type of responsive solution.
Other than those two things, this plugin is a home run.