There are actually several Jacob bakeries/coffee shops spread out around Aix [I've counted 4, but I…read morecould be missing a few!]
The formula works well: a variety of baked goods available to go or to eat in the back room of the coffeeshop. As with most French cafes, there's no pressure to eat and get out- patrons are welcome to stay as long as they want. Unfortunately the seating is not especially comfortable so I've never wanted to stay that long!
The baked goods here are delicious- very crusty baguettes, buttery croissants and pain au chocolat. The coffee, on the other hand, is to be avoided. All in all, though, a decent place to camp out and get some work done.