We have cruised on DCL twice before (just the 2 of us) and have 2 more cruises booked already. On one cruise, we may have an third person who would use the sofa that converts to bed ( a child actually -- 5 years old). We know what the sofa is like, but how does it open up? Does the back come down? Is it comfortable? Does it block access to the verandah when it is open? Thanks for your help.