We are going on the Disney Fantasy in May. We have a Cat 5A - Deluxe oceanview with veranda for 4 of us. It states a single convertible sofa bed and pull down bed. I am wondering how comfortable the sofa bed is. My DD will be 15 and has had some trouble with discs in her back from dancing. We went on a Royal Caribbean cruise with a sofa bed and my husband and I had to take turns trying to sleep on it. It was the most uncomfortable bed that I have ever experienced. We went on the Wonder when she was 11 and there were no complaints about the bed but there is a huge difference in 11 and 15. I just want to be prepared or see if we should try to change to a stateroom with a different layout.