Golden Princess is still in the shipyard and at this stage of construction, you'd find nothing inside but hanging cables and steel girders! It's amazing how quickly they finish the ship during the last month, including moving in cabins which are built in another location. In other words, there's nothing yet to photograph. The cruise lines normally hire photographers to shoot interiors during the first voyage.
But Golden is a sister ship of Grand Princess, so I expect much of it will be identical, only a few changes in decor. Having cruised on Grand Princess, I have to expect this ship will be stunning.