Google's Daniel M. announced in the Google Maps Help forum that they have streamlined the process of improving the results within Google Maps.
Now when you click on "Report a problem", you will see an overlay screen that will walk you through fixing the issue you see. Daniel said this will make it "easier to make simple corrections to Google Maps in 20 more countries, without ever leaving the map."
This new improvement is now available in the following countries and regions: Costa Rica, Dominican Republic, Ecuador, Ghana, Guernsey, Iceland, Isle of Man, Jersey, Lesotho, Liechtenstein, Luxembourg, Monaco, New Zealand, Nigeria, Panama, Philippines, Puerto Rico, Uruguay, and Venezuela.
You can initiate the "report a problem" click from either on the (1) bottom right corner of the Maps screen, (2) incorrect listing directly from the map or (3) on the left hand panel.
Here are screen shots:
(1) Click Report a problem at the bottom right corner of the Maps screen.
From here, select the place you wish to edit. Then, click Continue.
(2) Click on the incorrect listing directly from the map. Select more and a drop down list will appear. From here, select Report a problem.
(3) On the Left Hand Panel, click the small drop down arrow under the listing and select Report a problem.
Once you’ve selected Report a problem using one of these three methods, a new panel will appear.
Forum discussion at Google Maps Help.