Once you land in Adler-Sochi Airport take a taxi to Kudepsta, just tell the driver: “Kudepsta Beach” and he’ll set you down at the sea. The beach begins directly with the place where the spot begins.
You can also use public transport and take a minibus to there. Tell driver to stop at Kudepsta Beach. Further, go on foot the way you go to the sea, pass the overhead road, then 100-200 meters and you are at the place.