Enjoy a fix of vitamin D at Trypiti Beach. After you've topped up your tan, hang around and watch the sky transform with colors as the sun slowly sets.
You'll be spoiled for sightseeing choice when in Gortyna. Trypiti Beach is a good place to begin here, but there are plenty of other worthy spots to visit. Koudoumas Monastery, Canyon Saint Sava, and Koudoumas Beach are near the stretch of coastline and will fill in your day nicely.