Occupied premises change the whole arrangement
In a residential or extended-hours education setting, the cleaner is working around people rather than after them. That changes access rules, notice requirements, timing and conduct expectations. It also changes what counts as an incident: entering an occupied room without the agreed notice is a problem in its own right, regardless of whether anything else went wrong. Occupants also form a view of the cleaning arrangement from how they are treated rather than from the state of the room, which is worth saying plainly at induction.
The practical consequence is that the scope has to describe the entry arrangement as carefully as it describes the tasks. Which spaces are entered without notice, which require notice and how much, which are entered only when vacant, and who resolves it when a space is occupied at the scheduled time. Those answers prevent both an intrusion complaint and a room that never gets cleaned.
