I stumbled upon this piano bar recently and it is GORGEOUS. If I turned you off with the phrase "piano bar" - I completely understand. I'm usually turned off by them as well. But I swear this place is different (/better) than what you're imagining. Look at it.
Those photos don't do the place justice, either. It's crazy dark inside and way more enticing in real life (there's a skylight and if that doesn't scream class to you, then get the hell out of here). This is the best thing I've been to in Greenpoint so far (with Pie Corps finishing a close second) so you should probably go.
You can read more about the place over here.