I will tell you that is was packed, at 3:30pm- for brunch... But, it was great. The energy there is high, the staff is always so friendly, (not always the norm in NYC), the food is good, and the people watching is great.
I felt as though I was in Paris, ( could it have been the euro-crowd?)
The windows were all fogged up as it was so cold out and the noise was deafening, in a good way.
I really do recommend this restaurant, especially if you are a preppy francophile like me!