So we stayed here for about a week. Celso was a really really great and helpful host. He was super kind and fast with helping us once we had a problem.
The wifi was working okay but sometimes a little weak, probably due to load shedding.
Green point is really a nice area and there are great cafes and restaurant around the apartment which you can reach in few minutes.
We are quite sensitive to loud noises so that is something to be aware of as the area is around is really loud, especially on the weekends (e.g car races). The flat is okay to reach but sometimes a little bit annoying by car as it is a one way street.
But generally we would recommend to stay here as the apartment is really nice and has all you need for short stay.