Augrabies Rest Camp is right next to the famous waterfall - a safe and pleasant wooden walkway has been constructed leading from the restaurant to the cliff overlooking the falls, with numerous viewing platforms offering different vantage points. However, beware - there are swarms of midgets flying around, they get in your eyes, down your shirt, in your mouth... it's quite unbearable.
We were lucky and got one of the nice bungalows right next to the waterfall. It was clean, very spacious and fully equipped for self catering. These are slightly more expensive, but much better than the smaller, more basic bungalows further away.
There are some very interesting walks/hikes to do in the surrounding area. Ask at reception for a map and a list of walks.
The restaurant was good and quite cheap. The swimming pool was freezing cold.
The only other problems apart from the flies was the sheer number of people on the site - it was so crowded it felt like we were at a theme park!