A nice long sandy beach and the best place to windsurf in a westerly. Can also work in mistral (NW) winds especially if there is a decent swell running, although the wind is gustier. The water is crystal clear (although sometimes there is sometimes weed in the water which can catch on your fin. If it is good you will probably find other windsurfers here and you may find kites although these tend to stay further upwind and there is room for everyone.
Turn off the main road at Alaior and follow the signs to Son Bou, about 6km south. The big beach carpark is easy to find and is free.
The beach is pretty safe. There are a few rocks around especially further east towards the cliffs, but it is fairly clear around the beach bar area.