Never been before, only ever heard stories about it being tacky etc. We are staying in playa de las americas at mare nostrum complex. Apparently its a more upmarket place than the club/rave scene that playa is known for!
The area which you are staying is nice even if it is in PDLA, it's quite near Los Cristianos. I'm going in September too and staying in a hotel nearby Mare Nostrum. I've never been there personally but I have been told it's very grand and beautiful. Enjoy