My family and I just got back from a 6 day cruise on Navigator of the Seas. Overall it was a wonderful experience. We had a junior suite which is about 50% larger than a balcony room. It was a perfect size for our family.
The room also has a walk in closet that would envy many in their home. We also had several other cabins including the connector to ours. We were hoping we could be able to open the balconies between the two rooms like we have done on Freedom of the Seas however we were told no. This was a bit disappointing since it was so great to have the whole family congregate on the balcony and the kids slept inside. We found out that the Captain makes this decision so it is different per ship.
Though the room was a great size the bed needs something to make it more comfortable. It needs a pillow or foam top. We found it hard to fall asleep since it was so hard.
Our cabin was great with a walk in closet. Also had a bath tub that worked great for my little one. The room is about 50% larger than a regular cabin. Only thing we wish we could have opened the balcony up between our room and the room next to ours (which was occupied by a family member) like we did on Freedom of the Seas. We were told no and it's the Captain's decision so the rule varies by ship. Also bed is hard.