The Google maps support is really a plus.
Integrated update to new versions makes it easy to keep up with the development.
One thing I'd like to see in future versions is a "one step ad" where the user registration process is integrated in the "add a new ad". Today the visitor first must register a normal Joomla account on the site, login and then a new ad can be added.
Response from the developer is quick and polite. The extension is high quality and in my opinion well worth the money.