Mx maps module has the option to show one or multiple locations, with info of your choice in maps.The advantage of this module from other maps extensions, is that does not need any API key for the maps to show correctly.
The module can display many maps in the same page and many locations in the same map. It comes with nine different styles to give you the option to chose the one you like for your website.
The free version is limited and not all features are available.
INFO
Mx Maps 4.0.0