GREAT coffee, food & deserts downstairs, awesome hookah bar with great shishaupstairs. The pineapplemint shisha is the delicious. Very trendy clientele at night upstairs for hookah.
With their free internet access, great food and coffee you'll be tempted to stay all day. The downside- parking in La Jolla is a pain. Found a parkingstructure that's a flat $5 at the Parisi Hotel.
It's over priced but an excellent place to study. If you can get a table. Best not to come here for weekend study sessions, your best bet is a weeknight.
Overrated, but it's one of the few places in downtown La Jolla that's open even mildly late. Downstairs they serve burnt espresso drinks, so opt for something iced or blended to be safe.