This was a first cruise for my family. I traveled with my husband and two teen girls, ages 15 and 13.
All four of us stayed in one cabin with a balcony. We were afraid it might be too small, but we were actually very comfortable. Two twin beds combined for one queen bed for me and my husband. Our daughters had one twin, and a bunk pulled down from the ceiling. We thought the beds were very comfortable. We met other people on the cruise who didn't like them and thought they were too firm. For us they were great. If you like a firm mattress, you will enjoy the mattress on the Spirit.
The cabin had lots of storage space and even with four people we were able to unpack all of our stuff. The suitcases stored comfortably under the bed. I brought some extra hangers for the closets and we ended up using all of the hangers provided and all of the hangers I brought too.
Great cabin. We had four and were quite comfortable. Nice balcony. Plenty of closet space. Close to an elevator.