Why should you go there and how do you do it right?

For 100 baht, you can take a longtail boat from the main pier on Phi Phi. The walk from Ton Sai takes 20 to 25 minutes according to the map, but feels much longer in the heat. You arrive sweaty, even though swimming at the beach is best in the morning anyway. The water is crystal clear, you can see the fish close to the shore, and the sand is white and clean. In some places, it's covered with shells and small stones, so definitely bring shoes.

Don't expect a deserted beach. While long, it fills up quickly, and a significant portion of the shoreline is occupied by longtail boats rather than swimmers. Walk a little further, and it becomes considerably quieter. Dining options are limited to one resort restaurant open to the public and a couple of bars, so if you'd like a wider selection, eat beforehand. The water level drops noticeably in the afternoon, completely changing the swimming experience.