Pronounced zero-zero, this nightclub is located right next to the Planetarium in Gávea. The club has a large outdoor deck with wooden benches and comfortable recliners, perfect for those warm summer evenings. The inside space is divided into a restaurant area and a small bar and dance floor. The dance floor, alas, is not only small but also located in front of the bathroom doors. However, the fabulous outside space and beautiful people make up for that. Still, 00 is better as a bar than a club.