Absolutely fantastic piece of road, good pavement, good safety, flowing, fast (if you want to) and you'll certainly put your footpegs to the ground on the sami-fast, constant radius, flowy curves. A must do, and wonderful in both directions. If you like, I've got this stretch on video: https://www.youtube.com/watch?v=pquPjLLM4sk (or search for zubiri erro on youtube). Enjoy!