A little more detail:
http://standardculture.com/posts/3420-Skate-Your-Hearts-Out-stan-d-ardeFrom their
2010 opening blog post:
The rink will open this weekend and is located at 848 Washington Street on the corner of 13th Street. Tickets are $12, and skate rentals are $3. Hours of operation are 10am - Midnight seven days a week.
Hours are different this year (open at 9am weekends, noon weekdays) so I'm not sure if the tickets are still $12 - could be more. Call before you go.
(212) 645-4646