We have had some questions about the best way to get from San Francisco to Oakland.
You basically have two public transit options, the ferry, which leaves from Embarcadero in San Francisco to Oakland and the BART that goes from several locations in San Francisco to Oakland.
If you take BART you want to get off at the 12th st Oakland city center stop.
If you take a ferry, you want to take the Jack London Square ferry and then walk or take a free shuttle from Jack London to the hotel which is right by 12th st oakland.
You might also want to check out the Android and iOS app, iBart.