We live a few minutes away from Terranea, and while we haven't stayed there, we've been on the property several times for brunch and dinner. The resort overlooks the ocean and is beautiful- the pictures on their website are actually a good depiction of what it really looks like. The first time we went there, our kids started asking us when we could stay there.
The downside of the resort is that it's isolated- it's on the end of a peninsula, so to get to the freeway, it's at least a 20 minute drive. It could be a positive, as it's quiet.
If the driving isn't an issue I'd highly recommend it.