I was curious to find out about this zoo (since I am a cat fanatic who has not seen Sunda clouded leopard). I found this English language promotional video:
It appears to be part of a complex known as Jawa Timur Park 2 (on Java) that consists of a small carnival ride section and then two main sections: a natural history museum (Museum Satwa) and the zoo (Batu Secret Zoo). The zoo appears to be of decent (but not outstanding) quality. There are in my opinion some discrepancies in the narration. For example while the narrator states they exhibit animals in natural habitats based on the latest zoological standards, they show marmosets in somewhat small boxes (with branches, but boxes nonetheless). Later when the narrator states they adhere to modern standards of care, they show someone getting an elephant ride followed immediately by them playing with an orangutan. Of interest to us travelers is the very end that shows a hotel with rooms overlooking the zoo.