The beach is not bad. There are two options: free and paid. We charged a fee of 10 bucks or euros. The paid type has a double bed (frame and mattress). There are just sun beds and an umbrella on the free one, you constantly need to move away from the sun. Don't spare 10 bucks, it's better on the bed after the sea. And you can sleep. The sea of chicardos!!! Clean and soft .
There is a good beach in the village of Kyzylgach near the cities of Side and Manavgat. I don't know if the beach has a "Blue Flag", but the water is clean enough.
I did NOT like the constant activity of commercial water activities and transport: every now and then the captains of boats passed along the beach at relatively high speeds to attract customers to parasailing/paragliding and other entertainment, while raising large waves that constantly prevented them from swimming calmly. This is not exactly what you would expect from a 5-star UAI hotel in this relatively prestigious region.
We were there in July, vacationing at the Srlectum For Two hotel. The beach is clean, the sea is too, except for one day in two weeks when some garbage washed up from the sea). The surface is pebbly. The pebbles are not large. I was fine, but someone may need coral slippers, and their feet are buried in pebbles and it takes some effort to get in and out.
There are uncomfortable pebbles at the entrance to the sea, it hurts your feet, especially when you go out. Everything else is fine. The beach is like a beach, so there is nothing special about it. The water is clean. People allow themselves to turn on music - it prevents them from relaxing and listening to the sea…