Ask HN: Cool developer and/or startup meetups/co-working spaces in NYC?

Hi HN-NYC I'm a node/rails/ios freelance developer from Austria and it's my first time in this great city - I'd love to meet and/or work with interesting devs/product people over the next couple of weeks.

I already checked meetup.com but was wondering if working at any of the many co-working spaces wouldn't even make more sense (also I'd reckon not every gathering is listed on meetup.com).

I would be very grateful for recommendations on where to find the most interesting communities (currently I plan on working at http://harlemgarage.com tomorrow).

Thanks!