Apartment 912 is a residence on Felicity.
The apartment is part of allotted student housing, but is much more fancy than the dorms. The girls' apartment specifically has 3 en-suite living rooms and enough bedrooms that 5 people could have one each, although mostly 4 people at a time live there. Elena, Julie and Felicity originally were to be flatmates just the 3 of them, but Felicity temporarily wanted to live with Ben and the girls agreed to take on Meghan as their 3rd roommate. Once Felicity's plans fell through, she returned to the apartment. Molly moves in just as Julie leaves New York.