I had never heard of Rent Jungle until I was recently looking to advertise my 2 unit house. I decided to advertise on the site because their rates were so much lower than other similar sites and I've always had bad results from Craigslist. Rent Jungle charges only $47 per month. The last time I advertised my house, I paid $150 on another site.
I had a few issues using the site initially. I couldn't get photos of my building onto the site. However, their customer service team responded in minutes and resolved the issue.
I started receiving calls and emails the next day, and have filled both units already! I had more applications than I could handle actually.
Despite the minor technical issues, I would definitely recommend Rent Jungle if you are looking for a place to advertise your rental units.