The application relates to a unit for accommodating at least one member of an aircraft crew, wherein the unit is designed in such a manner that it can be arranged in a crew rest compartment of an aircraft, wherein the unit comprises first means, second means and third means for changing the volume of the unit, wherein the unit comprises: a lying-down facility for crew members, wherein the lying-down facility comprises first means for displacing the lying-down facility, a front panel, wherein the front panel comprises second means for displacing the front panel, and a sidewall, wherein the sidewall comprises third means for displacing the sidewall. Furthermore, the application comprises a crew rest compartment for accommodating at least one crew member, wherein the crew rest compartment is designed to be arranged in an aircraft, wherein the crew rest compartment comprises a unit according to the invention.