Terranea is a great place to go for a weekend. Within the resort there are many ways to relax. The Spa pool and adult pool are great. The general pool if you are traveling with young children.
Palos Verdes is a ways from Los Angeles/South Bay attractions and restaurants so the vacay is really within the resort itself. Trump National Golf Course is close by if you are a golfer. There several restaurant choices. Nelsons has a wonderful fire pit and is sea side casual with good food.
The bungalows are great and located cliff side with beautiful views and close to the spa pool, Nelsons, and the work out center.
A tad pricey but a calm weekend getaway.