I went there on March 8th 2019, in a group consist of 8 people. We tried the hotspring bath. The view was wonderful. The water temperature was hot enough to relax our body. Things that should be improved from this public onsen are the bath amenities, like shampoo, conditioner, hairdryer. Since the entrance fee is similar to the real Japanese onsen, which is IDR 150.000 or JPY 1300.
Overall, it's such a nice experience. Recommended!