Since the split, Mulligan has been in Los Angeles shooting the indie film Drive, opposite Ryan Gosling. She checked in to the Best Western Hollywood Hills Hotel for a few days while the film shot nearby.
"I don't know why people are so down on the Best Western," Mulligan joked to PEOPLE at Monday's Hollywood Film Awards in L.A., where she presented her Never Let Me Go costar Andrew Garfield with an award. "They have the best sweet potato fries I've ever had."
The hotel is known for its 101 Coffee Shop, which was featured in 1996's Swingers and is a popular late night diner for young Hollywood.