This component installs without any issues. Setting up a Google API was simple.
A few issues though;
Why do I have to suffer google ads in my admin section of Google Maps API Component? These are a waste of time and my bandwidth.
Setting up the default location was a nightmare, I typed in the correct details and it displayed my location 300 miles away from where I was supposed to be.
I typed the exact same details into the googlemaps manually (outside my website) and got a direct hit on the map location I wanted to display.
I had to fudge by copying the longitude and latitude from the googlemaps page into the config for me default location.
Next I tried to add items/objects to my map and found the accuracy to be unusable, again I had to fudge by cut and pasting manually from the googlemaps website.
The accuracy problem must lay in the interface between this component and google maps as google maps works perfectly on its own.
I quickly uninstalled this component and setup a Google My Maps which allows you to create items and objects directly on the map, I then linked to the map and used the Joomla wrapper to provide a decent ACCURATE location map with all my markers in the correct place.
I would wait for a second release and hopefully the accuracy problem may be resolved.