This is probably the most fun waterfall to visit in Vietnam though parts of it are not for the faint of heart! I see that many people have booked tours to this place but we just hired a driver for the day and set an itinerary. It worked out quite well. Ba Ho waterfall is really a park with a series of waterfalls, pools and a river for swimming, playing, picnicking and even bungalows to stay over. The park is really suffering from the lack of tourism in the area and from the fact that it's a bit distant from the center of town meaning that people won't just stumble on it without some effort. But DO MAKE THE EFFORT. It's totally worth it.
There are absolutely different difficultly levels in the different areas. The lowest level is great for kids. I think kids and less than very fit people can probably make it to the first pool at the base of the first waterfall you reach along the trail. After that, there's a lot of climbing and not steps...climbing - scrambling with ropes and iron steps and bars drilled into the rock. It's INTENSE. This is the sort of place that would have you sign a waiver, wear PPE or - just not be allowed in many parts of the world. But, we climbed all the way to the top of the marked path through the rocks and swam in all of the pools. It's all very tranquil right now since there are so few customers.
But, while Nha Trang is certainly known for its beaches, this is really a top attraction.