Ask how the company will staff and supervise your specific property. Reliable service depends on preparation, site knowledge and a clear point of accountability—not only the number of people assigned.
Ask how quality is checked, how concerns are documented and who responds when expectations are missed. You should also understand what is included, what requires special scheduling and how supply responsibilities are handled.
Finally, ask for evidence relevant to your type of facility. Experience in healthcare, hospitality or large commercial properties can reveal whether a provider understands the operational realities behind the scope of work.