Kona Cafe, no question. Had press pot every morning for a week last trip.
Since we are not staying at the Poly this year, we are bringing our electric kettle, grinder and press pot with us and will buy Kona beans at the Poly on our first day and brew every morning in room.
We also have a PS at Kona Cafe before our KTTK tour and a breakfast at Boma, since we hear they have a great press pot too.