I liked the Pearl a lot. The new NCL ships bridge the gap between Royal Caribbean and Carnival in decor. They make every ship different, so they aren't cookie-cutter inside like most RCI ships.
The NCL decor is rich and stimulating like Carnival, but it doesn't go overboard in over-stimulating the eye like some of the new Carnival ships do. They are tastefully rich and somewhat flamboyant.
My Norwegian Pearl gallery will give you the idea.