Not often you can find such a well thought and developed Joomla extension for free! I checked all the other free real estate extensions but none of them was out of the box and ready to go as this one. Support is a little slow but existent and will resolve your issues, even if it takes some time. Don't forget, it's for free!
A great thing is the easy customizability by editing the language files and if this is not enough, you will find all kinds of "extras" by digging through the support forum.
Definitely the best free real estate extension available at this point.