Cerna Kocka is a restaurant located in Karlin, right next to the entrance to the tunnel to Zizkov. This restaurant serves 3 kinds of Budvar plus Pilsen, and also has a very affordable menu with a large variety of Czech style food. Once you go through the main door, you’ll go down a set or two of stairs, to a large area underground, made up of several cavern-like rooms. This place has a special atmosphere- it’s dark and they often play techno or rock music. Usually Cerna Kocka is open late.