Passenger accommodation systems are described. An example passenger accommodation system can be disposed in an aircraft and can include a passenger seating deck, a plurality of passenger seats disposed within the passenger seating deck, and a partition wall disposed within the passenger seating deck so as to separate the plurality of passenger seats into a first set of passenger seats and a second set of passenger seats. The partition wall can be aligned with a longitudinal axis extending in the direction of travel of the aircraft. Movement of passengers between the first set of seats and the second set of seats may not impeded by the partition wall.