You can probably tell this by the pictures, but the pool at Sea World is a step below some of the other Orlando properties. Don't get me wrong, it's still nice and it is heated for year round use, but it is missing the water slide and zero entry features found at Parc Soleil (and Las Palmeras?).
Our family doesn't care as much about location at Sea World simply because we don't use the pool as much as we do at the other Orlando resorts. The rooms at Sea World are great, though, and the location is fantastic if you're visiting SW. It's also the easiest to get to when coming back from a Disney park.