I bring my own coffee and brew it in the room, and just purchase cream on site - not ideal, but it serves the purpose on most days.
Kona Cafe has Kona coffee in the French press, and there is a CS coffee bar that serves Kona blend coffee which is also tasty. However, this is just in the morning, not all day. Spoodles also does French press coffee, though I don't know the brand.
I agree w/ the person that posted the cheapy Styrofoam cups make the coffee taste worse. Maybe bring down a travel mug?