We have been running into this issue for a bunch of website that have no desire to show the Google map first in the sidebar. In fact, a better portion of the community wants the ad details in the sidebar!
Sometimes developing websites is funny. You can spend hours of time in research and testing to come up with only 3-4 lines of code which fixes the problem. Non-developers probably wonder “Why did it take them so long to come up with that?!” What you don’t see is the 500-600 other variations of the code we had to try before we got something that works. So here is about 4 hours of research and development that’s broken down to a mere few lines of code…
Place this code at the bottom of your custom sidebar-ad.php file.