Down the stairs, to the left, walk all the way west to the river, and head inside.
This is how I got to the most amazing supermarket I have ever been to, Fairway Uptown. Best produce I've seen in New York. Humongous. Decent prices. Not too far from my apartment. And The Cold Room. I wish I'd had a camera. I'd been talking about going there ever since I moved uptown in March, but I didn't get off my ass and do it until today.
It seems that every time I get off my ass, things improve. New York is looking better and better every day.