We just returned from the Caribbean Princess yesterday. We had a minisuite on Dolphin deck, midship. Great room. Plenty of room for the two of us. Standard size bedroom with queen bed. Small desk with chair, mirror, electrical outlets. Two nightstands. Large closet area with ample storage cabinet adjacent to it. Television in a wall unit, with refrigerator. I believe these are standard in all staterooms (unless you have beds remain in twin configuration).Additions in minisuite: nice sitting room with couch and chair, nice bathroom with shower/tub combo, additional television. We really enjoyed our balcony. There were two plastic chairs that adjust to the recline position, but they are not lounge chairs. The balcony was not deep enough for a lounge chair (unless you remove just about everything else out there). In addition, there was a small footstool/end table, and a round table with two chairs for dining---all a sturdy white plastic. If you are looking for a larger balcony, you may want to consider a full suite, or a balcony cabin on the Caribe deck.
I am sure you will enjoy both the cruise and the stateroom. Have a great time.