We did, but I think it was 4 years ago. It was ok. At that time the reviews said it was dated, but we did not find it too bad. But I see the same things being said in reviews now, so I don't think it has been updated yet. But with that said, if you are looking for a good location, extra space, kitchen area, hot breakfast and nice pool area you will enjoy it. If you want a luxury resort with all the new furnishings you may be disappointed.
We have stayed at the Hawthorn LBV two of the past three years and it is newer and the rooms are larger with a bigger kitchen, but I would stay at the seaworld location again.