I agree with everything topher said. Just be prepared though, once you book a mini, that is all you will ever want to book. The couch/extra tv is really nice and the larger tub/shower is so much better. There aren't any perks except for a glass of champagne when you meet your room steward and the extra space. It's well worth it and all we book now.
Here is the sitting area:
Here is the larger bathroom: