This place is a cool big camping ground 30 min by train from central Rome. It has camping plots, cabins, or dorm rooms to stay in. It was the cheapest place in Europe that i stayed in, i think it was around 10 Euros a night for a dorm bed. Its selling point was its very social bar and big drinking area that was packed full of travellers from all corners of the world every single night. I actually became known by the bar staff due to the excessive amount of partying i did there, i loved every second of it and never wanted to leave.
A close second to the bar is their swimming pool, it came in very handy in aiding my sore head every morning and cooling down after a big day sight seeing in Rome.
This place is highly recommended if you want to party with a heap of other travellers