They don't usually function as a restaurant, and it shows on the days that they attempt it.
They have weekly tours (by bookings) at a cost of R60 and its well worth it. They walk you through the entire process from growing the beans to grinding. Afterwards there's a coffee tasting session and you can buy products from the farm store.
For R60 you can get a good tour of the place to understand everything from coffee planting, harvesting right through to production and packaging. Coffee tasting afterwards. Booking essential.
Amazing locally grown coffee, great host. Do the tour and tasting. Well worth it.
Did the coffee tour. Definitely worth it if you haven't had to the opportunity to observe the process involved in growing coffee.