Darn, after I read your title, I was going to suggest looking into the place you stayed last time. It looks nice and new, with big condos. Never stayed there myself.
I'm only familiar with Marriotts (my DH travels a lot so he stays in them a lot). We stayed at the Grande Vista in March, and they have a few 3 bedroom units I think. They are right by Sea World, so not the most convenient to Disney parks, though.
Imperial Palms is 3 bedroom units at the Marriott World Center - there is also Royal Palms and Sabal Palms (2 bedroom units) there. I don't know the cost, but we can sometimes find "getaways" through Interval International (that's how we got Grande Vista for less than $500 for the week). If you have any friends that own a timeshare that is with II, they can check for getaways for you, and book it in your name for an extra $49.