Waikiki is just north of La Playa, which is right at the end of the "main street" of the village, Avenue des Plages. The area behind Waikiki seems very residential, and well lit. I would think you'd be just fine walking the streets from your villa to the village. It'll be, maybe, 2 or 3 blocks? General council is not to walk the beach alone at night, but you should not have to take to the beach to reach the village center. I predict you'll be fine. Enjoy!