This was a really good shuttle service. We did the ~5hr trip to Santa Teresa from Nosara and it was well-organised.
I booked and paid in advance. The driver arrived just a few minutes after the scheduled pickup time, but that’s very normal here as they are picking up other passengers, so don’t worry!
The ride was comfortable and the driver was really helpful. I’d recommend!
My only point of note is that sometimes you have to change buses on your journey (don’t worry, it’s very common and they wait until the other bus has arrived), but it would be good if they told you that in advance of your trip so that you are aware. Not knowing this can leave you a bit blindsided but there’s no need to worry.