Been there twice, on bikes rented from Jo´burg. The views to Drakensberg are absolutely fantastic, if the weather is good, and Lesotho is also a nice place to visit.
Sani Top Chalet was a nice place to stay in, right there on top of the pass... on my first trip, I had to almost ride to the wall of the guesthouse to find it, because the fog was so thick (I´d been oh so lost for hours on the mountains like that, so you can imagine my satisfaction, when I finally found it!!) ...But my info is almost 10 years old, so I don´t know, if the whole place exists anymore or not!
But if you´ve got a week, and leave from Cape Town, then it might be too far away.