Konyaalti Beach is one of the two main beaches in Antalya located on the western side of the city. It's 7 kilometers (4.3 miles) long and consists of small pebbles and rough sand. Near the beach, you'll find a park, residential area, bars, cafes, and hotels. At one end of the beach is the Antalya Beach Park where there are more cafes, bars and restaurants with an open-air food court atmosphere. They also have showers, beach chairs and sun umbrellas to rent, and other services for the beach. Towards the west, away from the city, you'll see the dramatic backdrop of the Beydağlari mountains.
The beach is mostly frequented by locals, and it's a long enough beach that there shouldn't be any trouble securing your own space in the sand. If you're looking for other activities besides sunbathing, there is a water park at the other end of the beach from Antalya Beach Park. Next to that is a marine animal park. You can also take a ride on a banana boat from several different companies in the area.
To get to Konyaalti Beach from the center of Antalya, take the west-bound tram (towards the mountains) and exit at the last stop. Tram tickets must be paid in cash.