We just stumbled across this café while walking around the Bo-Kaap neighborhood on a hot afternoon. They gave us the most refreshing drink we've ever had: a fresh mint lemonade that had us ordering coffee and dessert. They also have breakfast and lunch and (one of) our big regret(s) is that we didn't get a chance to go back for either of those. They also have fantastic arts and crafts for sale, along with local clothing.
The service also was great: super nice people and extremely comfortable to just hang out as long as you'd like.