Doka Estate Coffee Tour
If you are interested, this is a good blog about Doka Estate Coffee Tour, describing all the steps and stations: https://mytanfeet.com/activities/doka-estate-coffee-tour-costa-rica/. I don't remember much about steps, but from myself may add: wear long pants because there are a lot of fleas on the plantation, those of us who wore shorts were bitten all below the knees. Not a big deal, just itchy.
We took this tour on our way from the South (Quepos and Marino Ballena) to the Arenal area. If you plan to do the same, start as early as possible (6AM or so) because the scenic drive is long and you need extra couple of hours for the coffee tour.