We went on this trail as it is free and were not disappointed! Great views all along the way of the river and gorge. We hiked from an area farther north and went along the river to the whirlpool area (a couple of kilometers). We went with young children (8,6,3) and would probably not go again with kids that young. They enjoyed it, but we had to them along the way especially along places that were slippery or close to the edge of the rapids.
Your best bet would be to park where the whirlpool and cable car are and then desend there. That trail and those steps are no problem. But if you try hiking along the river, it is more difficult and the way is not clearly marked.
Still, it was a blast. My 8 year old said, "This is best vacation ever!" You can't beat that for free!
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