Hi Rui,
Thanks for your massage but sorry fore the late reaction. Have been in Capetown for the last four days and read your message just yet.
The pictures on the 7th of September where indeed taken in the afternoon (landing 03R) from a spot which is a ten minutes walk from the Birchwood hotel. It's at the parking lot of Nikki Beach.
What I have to mention is that I went there alone (stupid I know) and didn't feel my self safe on that spot. I had a couple of locals asking for money and that sort of things so it's recommended to go there not alone!
When the aircrafts are landing on 21L you should go to spot 4 or 5 on the airfield guide.
Grtz Chris