The courtyard, which is due to open in November 2009, will house 25 retail units as well as restaurants, bars and spas.
The owner of the Covent Garden estate has briefed Holler to relaunch the area's official website as part of an ongoing programme of investment to boost its appeal to Londoners and tourists.
The website will offer information on local facilities such as shopping and entertainment, as well as events.
Holler will create web content on a monthly basis and build microsites to promote specific events.