Ultra-luxury ship: Well, I don't know about that. It seemed a little bland. The decor is beige on beige for the most part.
Cabin: Bed is extremely comfortable. Pillows are comfortable. Bathroom is well-appointed. Balcony over the sea is smallish (two people only) but nice. Small love-seat. TV's are in the mirrors, which is fine unless there is a reflection because you would like to have your curtains open to view the sea.
Entertainment: umm... no. Corny at best.