This spot is great during the warm months (from May till September). The Gulf of Finland is a great place to spend a sunny weekend (bring food and drinks, even barbecue-ing and fire-setting is allowed if you have mangal). The sea is knee-deep but picturesque. Beware: the wind is usually way stronger than in the city, take a windbreaker or blanket to keep warm (even on a sunny day!).
It’s really common to barbecue in the summer in Russia. Earlier it had been only “shashlik” (red meat on skewers) but now, as the vegetarians grow and become stronger, there are chicken, fish, and vegetarian barbecue weekends.
But you do not need to barbecue anything. You can come here to sit, listen to the wind and waves or to wander around the sealine.
To get here, first come to Finlandsky railway station or Staraya derevnya subway station: both spots are on the railway to the seashore (check the timetable). You can probably get there by car, too, but the road is narrow so there’s a lot of traffic.
Hop off at Kurort railway station and go through the thin forest to the health resort. Then enter the seashore and head left. There must be people under the trees, choose your own tree.
I wouldn’t recommend going there after dark, when there’s heavy winds, and especially during the cold season.