Access is not easy but the view is definitely worth the climb. The path to the first coordinate is a half-hour easy walk but after that be prepared to fight against medieval bushes and wild (but friendly) goats.
A good time to visit is a little before sunset (start about 1 hour before). The walk down is easy and can be done even in the dark.
EDIT (20 June 2019): The cache needs maintenance but cache owner is unavailable until August. Could the next visitor kindly bring a container and a log book?