We've been in various crown loft suites they are all the same (except the accessible one) so while I've not been in THAT ROOM, they all have a king bed upstairs and at least a double fold out sofa (quite comfy) downstairs. But a double could be a little small for some adults. But for two kids it should be great. I think some have queen pull out beds but it will be at least a double.
Your cabin attendant (the ones on 17 are generally great) will make up the bed while you're at dinner and turn it back into a sofa in the morning. And there are two full bathrooms and TVs on both floors. and lots of closet space. You'll love it.