Final answer:
When a staff nurse cannot resolve a room assignment issue, the correct person to contact next in the chain of command is the Charge nurse, who oversees unit operations.
Step-by-step explanation:
If a staff nurse is unable to resolve a concern reported by a client regarding his room assignment, the next individual in the chain of command to approach would typically be the Charge nurse. The charge nurse is responsible for the management of a specific unit or area during a particular shift and is considered a higher authority than the staff nurse. They have the experience and authority to handle a range of issues that may arise, including patient room assignments. Nurse's aides, unit clerks, and housekeeping staff do not have the same level of authority or responsibility when it comes to the nursing care and patient management decisions.