Which beach near central Antalya has warm water and is reachable by public transport (good for families with kids)?

Updated pricing for Mermerli beach: entrance is 800 TL, which includes a sunbed and umbrella. However, visiting in the afternoon means the umbrella shade has already shifted and cannot be repositioned; sunbeds are placed very close together, forcing guests to lie right next to strangers. Also noted are many steps down to the beach. Water is cold — the reviewer called it the worst beach in Turkey.

Mermerli beach in central Antalya wasn't kid-friendly: the water felt cold with an icy current near the bottom, despite a fairly pricey paid entrance.

A resident living near Konyaaltı beach for 3 weeks says the water there is warm, like fresh milk — no cold currents noticed. The only downside is the pebbly shore, so water shoes are recommended.

Clarification: Konyaaltı beach stretches for 7 km, and in some spots — especially near the start closer to the city center — cold underwater currents can occur, so it's better to pick a section further away from that end.