Apparatus and methods for increasing useable space within a mobile platform compartment, such as an aircraft lavatory, which is adjacent a predetermined area, such as a passenger doorway area, of the mobile platform. The apparatus generally includes a turntable module rotatably coupled to supporting structure within the mobile platform. The turntable module can be rotated to a first angular position in which the turntable module is substantially within the compartment but outside the predetermined area. The turntable module can also be rotated to a second angular position in which the turntable module is substantially within the predetermined area but outside the compartment. The turntable module supports at least one item, such as a lavatory sink, which is accessible from within the compartment when the turntable module is in the second angular position.