The NASA-funded study run by the University of Hawaii is the longest of its kind. The study designers described the used habitat: “It is an open concept design that includes common areas such as kitchen, dining, bathroom with shower, lab, exercise, and work spaces. A second floor loft spans an area of 424 square feet and includes six separate bedrooms and a half bath. In addition, a 160 square foot workshop converted from a 20 foot long steel shipping container is attached to the habitat.”
This was the fourth such mission organized by NASA. Earlier missions have each lasted four or eight months. This time the crew included a NASA physician, a hydrologist from Montana, an MIT-trained engineer and pilot, a French astrobiologist and an architecture student from Tongji University in Shanghai. It seems that the lack of privacy for one year was the most difficult thing to try.