Cabin 7143 is on the stern/aft of the ship almost in the center. It was disappointing in a way as we had booked it to enjoy the wake while relaxing on the balcony. However, it's so high above the wake that the enjoyment is reduced. If this is your intent, I'd recommend booking on a much lower level. BUT, the balcony was significantly larger than those on the port or starboard. So was the stateroom -- it had about 5 extra feet at each end.
I liked the decor, but didn't care for the closet arrangement. It's very tight -- a narrow entryway that the room service personnel could just barely navigate. Also, I missed the storage shelves that are typically above or in the corner above the vanity. Many past HA cruisers mentioned this and most agreed that it might be just another cost cutting act.