Café Riviera in Greenpoint, Brooklyn, has Polish employees and Polish desserts and Polish customers.
I traveled here in search of people to speak Polish to, and it was a highly effective strategy. I took my grammar book with me, studied Polish while I caffeinated, asked my big-haired neighbor for help (in Polish), and had a lovely little conversation with her.
A definite cultural experience. I was less drawn to the decor and food than to the flurry of Polish around me, but I liked my latté well enough, and for language practice, this is a perfect destination.
830 Manhattan Avenue
(between Calyer and Noble streets)
Brooklyn, NY 11222