In general our mountains are source of our water and it usually are green zone and in some mountains still have leopards living there, including in West Java, near Jakarta. This Youtuber has done many drone footage on mountains in Java.
Here the look of Wilis mountain landscape in East Java
It is still in Greater Jakarta, the exact location is Bogor. I think American will see it as suburb life. The location is where Bobo cantik Youtuber house is located.
Basically I prefer to live inside Jakarta instead of Greater Jakarta areas as Jakarta is a center of business in Indonesia, but some people like this traveler Youtuber doesnt need to work and meet clients in office to get money for a living. For remote working, the place is perfect. It takes about 2 hours by car from Bogor to Jakarta.