Very nice publications of South Africa can be found at
In the submenu "where to go" many places are described.
In the subsection "Karoo" you find among other Graaff Reinet, which is ideal for a day trip, also the neighbouring Valley of Desolation and the Camdeboo Park.
Very atttractive is Kimberley with its old mining village and the huge diamonds excavation + museum.
The magazine "Getaway" also provides good travel suggestions as well as accommodations.