It's a bar with live Jazz music, random furnitures, and bunch of games like pool, ping-pong, chess, and etc. The place is filthy, disorganized, and fun.
Coming back from from New Haven, we got off at Grand Central and he took me down one of the concourses to the place with the vaulted ceiling. He stood at one corner and I stood at another and we whispered into the walls, our voices drifting across to each other.
You need to make a reservation for L'Artusi years in advance... or at least the week before, if you try a walk-in then ask to be seated at the bar, as always in New York that is the best seats at any of my favorites restaurants.