I have a chance to try one of the package from VW Tour Borobudur. It was a great experience, we ride in a colorful classic Volkswagen 181 where we stops at multiple sites. This is fully customizable depending on what we want, the location is at Magelang.
Situgunung Park located in Sukabumi, arrived at night and camped there. There are few interesting spots to explore but divided into two paths. We took the Curug Sawer waterfall path through Suspension Bridge. Maybe next time we can take the other path which lead to the lake and another waterfall.
Check out the video from my trip to Mount Halimun Salak National Park.