The invention provides an aircraft passenger accommodation unit comprising a seat, a shell defining an opening that allows a passenger to egress between an aisle and the seat and a door, comprising a base portion, translatable in a first direction across the opening of the shell, between a retracted position and an extended position, and a second portion, translatable relative to the base portion in a second direction that is transverse to the first direction, between a stowed position and a deployed position. When the second portion is in the deployed position, the base portion is able to translate between the extended position and the retracted position. The invention also provides a method of opening and a method of closing a door.