Went to Xanthos first for a 30 minute stop. It's very hot and dusty and most of the site is in the British Museum. There's enough left to get a feel for the place though. Saklikent Gorge is lovely but be prepared to get wet. We paid an extra £10 per person to go rafting, which was really good fun. To get to the gorge, you need to wade through waist high water and a bit of a current, but well worth it. Lunch was on cushions on a platform over the river. Lovely. Patara beach is beautiful, but the area with beds and shades for hire was extremely busy. We chose to walk further on to a very quiet part of the beach, but there was no shelter there at all.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.