nyc: What's a good, cozy, spacious and popular lounge in NYC to host a birthday party for a huge crowd? Please, if you can specify a number of spots that will be really cool. The place also needs a dance floor with fantastic music. Perhaps, I could be expecting approximately 30+ people. Phone numbers, addresses, names, websites anything that you can provide would a great help. I really appreciate all your endeavor in providing this answer.|||Go to tonic bar. There are two. One at midtown the other at time square. The one located at midtown has a roof top view; very neat by the way. These are the websites: toniceast.com and tonicbarnyc.com.|||there is a place called Slate in manhattan. i havent been there in a while, i forgot exactly where it is. but you can rent out a room and it can hold about 50 people i think, or more...depending on which floor you rent out.