During our trip, we stayed on one of the superior ocean view stateroom with balcony. These staterooms are typically about 198 sq ft in floor size and comes with an additional 55 sq ft ocean facing balcony. Our room, 210, was located on deck 7 (7210).
The stateroom cabin is mostly the same as the one we stayed on the Quantum of the Seas, apart from the bed which was configured close to the balcony with the sofa in the middle instead. It is also located on deck 7 just above the rows of double height yellow lifeboats. The views however are not obstructed. An interior door also connects this cabin to room 728, a deluxe ocean view stateroom with balcony.
Configurations will vary, but the short video above will hopefully give you an idea to the layout and size of a typical superior balcony stateroom on the Anthem of the Seas.