We've been coming here for almost 30 years and seen it transform from an interesting ruin with a spectacular view to a rebuilt monastry of great beauty. The work has been done sympathetically with the small amount of original remains encompassed within the new build. Originally it was hard to imagine what it would have looked like and now you don't have to, the buildings exist again. You'll need comfy shoes, the ground is still a little rough and some of the stairs are uneven, and perhaps a cardigan - the buildings are cool and the wind whistles through the glassless windows. Most of all you'll need a camera. The patterns of light and shadow, the interesting nooks and crannies, the wild flowers and the absolutely glorious view. One to two hours is enough to investigate the monastry but there is a restaurant that does a lunch time menu - good service, amazing view, food ok for the price.
If you like to walk, there's hills to climb and paths galore to follow, you're in Cap de Creus National Park which is a huge protected natural reserve and it's lovely. There are a collection of other ruins scattered about the hillside too, so you don't have to walk far to feel that you are 'exploring'.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.