Is it considered unjust between wives if one wife's apartment is slightly larger and more expensive in rent, and does the other wife have the right to demand the difference in rent?

The justice required of a husband between his two wives is achieved by ensuring equality in nighttime stays and fulfilling each wife's right to maintenance and housing. It is not obligatory to equalize the expenses and housing between them. If the husband provides each wife with her rightful, suitable dwelling, there is no sin upon him if the two apartments differ. The wife has no right to demand compensation for the difference in rent between the two apartments.