There is a campsite at the river (a number of sites actually), literally at the base of Intunja. After Hlatikhulu Neck, at the point where the trail to Keith Bush Camp splits from the contour path (this is quite an obvious junction), continue on the contour path down to the river, where you'll stumble onto the sites. This will be much shorter and easier than going up to Keith Bush Camp. It depends on what your objective is though - do you want to climb Intunja, and how many days do you have? Keith Bush Camp is much more scenic if you simply want to see the area. If you enjoy caves, consider Zulu Cave, it's a really nice, sheltered cave further down the valley, which could also be used as a base camp of sorts for Intunja.