Your room rate includes two bottles of their private label wine. Plan to arrive early. Your first stop should be breakfast and coffee on the trellis covered patio of the D'ouwe Werf Hotel. This is where you should spend your first night. After you have settled into your room walk over to the information office, select one or more of a number of walking tours.
Bike rental is also available here.
There is lots of local history and magnificent buildings to discover on foot. Including the University of Stellenbosch. Have your lunch this day at Boschendal. I do recommend reservations, however I have been lucky in the past without them. After lunch, taste your way to Franschhoek.