Hi hello, for entrance fee IDR.25,000/person

Depends on how low u go (and subsequently how high and fast u climb back up) u might spend around 1-2hrs. Theres a signboard saying no swimming. Not sure if theres pple who did, but when i was there no one swim. Water current looked quite fast, plenty of rocks and water was not clear.

There is any entrance fee, 25.000 IDR. And, there isn't any cafe, but restaurant.

Not literally swim actually, but yea you can put your body near the bottom of waterfall, just be careful because of the stones are really slippery. The water is quite cold though

Yes...you still can see the waterfall from the first stop ..as you see from my photo but you must come from the entrance gate. It's still far-far down if you want to see the water, always remember that the hardest part is return back upward through the steep stairs especilally with your childern.