I read a blurb about the hot chocolate at Lunette et Chocolat (Prince St, near Mott St) in New York Mag last week, so I went and checked it out last Friday and enjoyed it so much that I went back Saturday with some friends. The store offers an incongruous combination of finely made chocolates and beautiful eyeglasses, with a little cacao bar in the back. They've just added a beautiful garden cafe, and the menu consists of crepes, both entree and dessert, arepas and an array of drinks.
The hot chocolate is the best I've had outside Europe. The first time I went I got a small dark chocolate, which was $2.50 for something roughly the size of an espresso. The chocolate was thick with flecks of unblended chocolate interspersed throughout. The second time I got a large ($5.00), and it seemed to be about three or four times larger than the small, but it was so rich I could barely finish it. This time it seemed even thicker but didn't have the unblended chocolate. We also shared a crepe containing chocolate, coconut and creme anglaise, with raspberry syrup on the side. It was one of the better dessert crepes I've had in NYC.
The service is good and super-friendly. The people that work there are very genuine and happy to talk about their place.