Me and my Mrs went to Antalya in June, and we were the only English people there. Full of German's and Russians.
The weather was incredible, 47 degrees it got to in the middle of the week according to the clock around the pool, but you don't get treated very well being English, the staff were tolerable, but the other guests were bastards. The only people who treat you well are the market traders, but that's just because they all want to get their hands on your "English money".
We enjoyed ourselves, but wouldn't be in any hurry to go back. There's a reason Brits can get cheap deals for Antalya.
Edit: Also if you are going to Antalya, take Euro's not Lira. Everything is priced in Euro's and it is a pain in the arse taking Lira as everybody makes up their own exchange rate, and a few shops won't accept it. Failing that, take British Sterling, you'll live like a king for the week.