After reading a number of reviews on the Royal we were more than a little apprehensive about what we would experience. Rather than rehash all that, let me tell about our experience.
The cabin, an OV Balcony, mid-ship deck 11, baja was large enough for two. The storage was adequate for a week, the Decor was clean and bright. The bath was as large enough and nicely appointed. The balcony, although not as large as other ships I have sailed on, was comfortable to sit and read or view the sights.
The elevators on this ship are not large, and they do not hold "18" people; none do. You may have to wait for an elevator that has space for you, sometimes. The midship elevator does not have an accompanying stairwell that goes beyond the 4,5,6,7 atrium levels. All this being said we did not find any issues with getting up, down and around the ship.
The decor was clean and bright. Although not as large as some other Princess ships, for 7 days it was adequate. The bath was large enough and the shower was as large as most cabins below a mini suite. The balcony was not large but two people could sit and enjoy a drink or read comfortably.