There are several forms of public transportation available. BART trains run within San Francisco and from the East Bay and South Bay while MUNI Metro is comprised of subway and above ground light rail vehicles but only in the city. You can take either BART or MUNI Metro to the Montgomery or Powell Street Stations. Both are within walking distance of Moscone Center North, South, and West. Guests of Hotel Nikko can also take a 10 to 15-minute walk to the Moscone Center.
There's a full-service Business Center that can handle needs of all types, everything from photocopying to printing to faxing. There are even computer workstations and shipping services, which are provided by UPS. Office supplies are sold there as well. The Business Center is where you'll need to purchase access to the Wi-Fi that can be accessed in all of the lobbies and common areas.