Concept work for Rotatable House for Zero Gravity field. There is no category like wall, floor neither ceiling in outer space! You rotate yourself in habitat space with Zero-Gravity field. This experience must bring such a radial perspective for living circumstance.
Utility supply system in outer space is also totally different from our ordinary gravity field. Bottled service (water, gray water, recycled resources, food etc.) will be transported to each house. There is no tubing supply system, because single damage may effect fatal to whole system.