All Suite Downtown San Diego Hotel. A warm welcome awaits you at Sheraton Suites San Diego at Symphony Hall hotel. Built around San Diego Symphony Hall, our all-suite downtown San Diego hotel is in the center of prestigue and nearby the Gaslamp Quarter known for 16 blocks of fine dining, shopping and amazing entertainment. Some of San Diego's most famed attractions such as the San Diego Convention Center, the world-famous San Diego Zoo, Balboa Park, Old Town and Sea World are all just minutes away.