Hi, Wendy!
Like every Value Resort at Walt Disney World, the
Little Mermaid standard rooms at
Disney's Art of Animation Resort features two double beds and a single en suite bathroom. If you and husband are comfortable in a double bed, that's one option; if not, you can each bunk with a child.
Really, if the sleeping arrangements can be handled, it all boils down to how much space you'll need for "stuff" and for down time. Because your children are older, and might not require as much rest time during the day as a really little one, it's quite likely that you will not be hanging out in your room too much, but instead enjoying the amenities of the new Resort, the pool, and of course the Parks!
Disney's Art of Animation does have its own shuttles to each of the Parks, and does not share with any of the other Value Resorts.
Have a wonderful trip!
See you later, celebrator,
-Deborah B.