When using the new Google Maps (info here: http://maps.google.com/maps/about/explore/), there are some new ads that are not blocked. I'm afraid I don't know enough about these newer layouts to assist in finding a filter myself.
One would have expected the results that are labelled as ads to come up anyway with this search, so a solution that blocks them entirely is undesirable. However, it may still be possible to block the advertisement text underneath them along with the advertisement bar underneath the search term.
Setup Info:
Chromium 28.0.1500.89 (209621)
Adblock Plus 1.5 for Google Chrome
Easylist and EasyPrivacy enabled and updated 7:02 PM CST on July 13th, 2013
New Google Maps Ads [n/a]
Looks like the ads on the map cannot be removed. The ad bar can be hidden by ##.ads-card but I think it will confuse some users if they click on the ads in the map and nothing happens since the bar is where the ads are shown if you click them on the map.