I had a hiccup with version 1.0.4, but quickly fixed with feedback to the developer. Now it works like a charm.
I've tried the competitors: MapPress, MapsMarker, WPmudev, Maps Made Simple, etc. This one gets it right in making it easy to add a map to my blog.
I look forward to seeing what else these guys put out there.
Note: I noticed some JS incompatibility with Jetpack, but after deactivating and reactivating Jetpack it worked!