Write the hirer's obligations first
Most hall problems begin with the hire agreement rather than the cleaning contract. If hirers are not told plainly what they must do before leaving, the contractor's attendance absorbs it, and the per-use figure has to be priced for the worst booking rather than the typical one. Set out the obligations in the hire terms: rubbish bagged and placed in the bin area, food and drink removed, furniture returned to the standard layout, spills reported.
Then reference those obligations in the cleaning scope as the assumed arrival condition. The two documents should agree. Where they do not, the gap is discovered at eleven o'clock on a Sunday night by a cleaner with no authority to resolve it. Aligning them is straightforward, costs nothing, and makes the per-use price meaningful because it describes a defined amount of work. Committees that update both documents at the same time avoid the mismatch entirely.
