It depends on the class of ship as to the bed configuration. Some have the sofa bed that does not fold out and a bunk above it. Some have a foldout single with bunk above the large bed. But also importantly, keeping your balcony door open sucks a/c out of other rooms in your sector to keep your room cool. It’s a no no, and there are signs on the balcony doors asking you not to do it. EM