During the writing, the entrance fee for a person is Rp25.000, whereas for foreigners, the fee is sky-rocketed to Rp250.000. There is one catch here though, you are not allowed to bring your camera inside the area, however mobile phone is allowed. If you get caught bringing the camera, you will have to pay Rp1.000.000. Quite an amount of money -_-"
Inside the area, you can pretty much do a lot of things, from just resting, taking pictures, riding a boat, and go to the beach. Here are some pictures to give you an idea on what is inside this place.
If you want to ride a boat, you will need to pay for an additional price of Rp.250.000 (6 people) or Rp.350.000 (8 people). This place also provides small tents where you can stay for another cost of around Rp.300.000 for a tent for a night.
If you are into traveling to natural places, I can recommend this place. The place is quite big and cozy enough if you want to just relieve your stress and tiredness from daily living in a big city like Jakarta.