A passenger accommodation assembly for a passenger vehicle, the accommodation assembly configured as a column (1450, 1452) of at least four passenger seats, the column (1450, 1452) oriented parallel to an axis defining a forward and a backward direction, the column (1450, 1452) comprising at least two arrangements of: a first seat oriented to face toward the axis in a first direction not substantially parallel to the axis, the first seat convertible by a relative movement of elements of the first seat between a first sitting mode configured to support an occupant of the first seat in an upright seated position and a first bed mode in which elements of the first seat form at least part of a first sleeping surface configured to support an occupant of the first seat in a substantially prone position and; a second seat positioned behind the first seat in a direction parallel the backward direction, the second seat oriented to face toward the axis in a second direction not substantially parallel to the axis, the second seat convertible by a relative movement of elements of the second seat between a second sitting mode configured to support an occupant of the second seat in an upright seated position and a second bed mode in which elements of the second seat form at least part of a second sleeping surface configured to support an occupant of the second seat in a substantially prone position, characterized in that when the second seat is in the second bed mode, the second sleeping surface is situated at a different height relative to a reference surface from a height of the first sleeping surface relative to the reference surface such that at least a portion of the second sleeping surface vertically overlaps with at least a portion of the first sleeping surface, and in that - the first sleeping surfaces are arranged in an alternating pattern with the second sleeping surfaces into said column (1450, 1452). a first seat oriented to face toward the axis in a first direction not substantially parallel to the axis, the first seat convertible by a relative movement of elements of the first seat between a first sitting mode configured to support an occupant of the first seat in an upright seated position and a first bed mode in which elements of the first seat form at least part of a first sleeping surface configured to support an occupant of the first seat in a substantially prone position and; a second seat positioned behind the first seat in a direction parallel the backward direction, the second seat oriented to face toward the axis in a second direction not substantially parallel to the axis, the second seat convertible by a relative movement of elements of the second seat between a second sitting mode configured to support an occupant of the second seat in an upright seated position and a second bed mode in which elements of the second seat form at least part of a second sleeping surface configured to support an occupant of the second seat in a substantially prone position, characterized in that when the second seat is in the second bed mode, the second sleeping surface is situated at a different height relative to a reference surface from a height of the first sleeping surface relative to the reference surface such that at least a portion of the second sleeping surface vertically overlaps with at least a portion of the first sleeping surface, and in that - the first sleeping surfaces are arranged in an alternating pattern with the second sleeping surfaces into said column (1450, 1452). - the first sleeping surfaces are arranged in an alternating pattern with the second sleeping surfaces into said column (1450, 1452).