Compared to the other palaces and sights in Granada (aka the Alhambra), this is not worth the trek. There's also very little information inside the site about what you're looking at.
This site is included in the Dobla De Oro ticket to the Alhambra but regardless I wouldn't recommend the visit unless you want to take photos. The building has the traditional Islamic architecture you see in any historical palace or home you visit so you can get some potentially good photos without crowds. But by the time you climb up the mountain you might not be looking so hot anymore lol. read more