RUMBA LOUNGE FRIDAYS San Diego has stamped Friday nights at Onyx: Rumba Lounge as the best hot spot in the Gaslamp Quarter 3 years in counting. A prime destination for Latin Music, great drinks and unique sounds to dance the night away. We have 3 rooms and dance floors each with their own unique ambiance, open after hours til 3am. Sign up for the guest list at OnyxRoom.com. Guest list begins at 9:00pm and closes promptly at 10:30pm.