I've been to this bar a few times now, and it's always a blast. I am not one for clubbing, but Nesta is an exception; I love their music selection and the vibe of the people there. I never felt awkward or any hostility from any of the people there. It's a great place to dance and maybe have a few drinks.
This being said, getting in seems to depend on the discretion of the bouncer. I've always been fine with large groups, but once I was told that the place was full. I asked a girl who just came out Nesta for a smoke whether or not it was full and she said that it was nowhere near full.
Fun place to dance if you can get past their bouncer.