Stopped in for supper, ordered a coffee, and then just kept coming back. Extensive dessert coffee menu, but even simply the cafe con leche (coffee with milk) was incredible, and a pretty good deal at around 800 colones. Supper was also pretty good (lots of standard rice and beans) for a decent price.
I didn't pick up any of the coffee beans there, but then spent the rest of my trip, going through many a grocery store in different towns searching for them (Doka Tres Generaciones gold label, specifically AA Peaberry I believe, in case anyone else is hunting for them). Thankfully eventually found some at the San Jose airport right before leaving. :)