We stayed in 5552 on the Dream and it was a very large handicapped accesible cabin with a large verandah.
If you go to
www.cruiselinerooms.com, you'll see lots of pictures of this cabin. The only things I didn't like were the ramp to the bathroom (seems standard on
DCL ships) and that the bed was too high for my mother to transfer to from her wheelchair (she ended up on couch). It was very convenient to the forward elevators, it was large and easy to turn the wheelchair around in, had a great verandah and enough storage for the 3 of us for a week (did a 4/3 night on the Dream).