We had a private tour of the Doka coffee estate, so group tours may vary significantly from our experience.
The Doka Coffee Estate bills itself as the "Real Coffee Tour." It is the oldest-functioning water mill in Costa Rica, and one of the original farms. The Cafe Britt tour is popular for its live actors and Disney-esque presentation. The Doka Estate does not do this. It is a matter of what you prefer. Both plantations use some organic methodology in their farming. The Doka Estate sells most of their coffee to Starbucks, although you can also order it directly online.
You must drive through the farm's lands, and most tour guides will start here to explain the farming process and the history of Doka Estate. After arriving, most visitors come to tasting hall, where five types of coffee were on offer. We soon discovered that peaberry was our favorite. Following this, we saw the water mill, not operating at the time of our visit, as it was off-season. Our guide explained how the coffee beans are sorted by quality and then processed. Then we visited the grinding room. Finally, we visited the store where we were able to try more coffee. Here we purchased several bags of Peaberry, made from a rare coffee bean that's actually a mutation of the normal coffee bean. After the store, we saw the small museum that housed older equipment used in previous decades.
During the right season, you can see the plantation workers gathering the coffee and the mill at work. High season runs from September through March.