Three different kinds of kitchen work
Daily kitchen cleaning is largely the responsibility of the venue's own staff, since it happens during and immediately after service and involves food-contact surfaces. Contract cleaning generally covers floors, walls, waste areas and periodic deep work. Canopy, duct and exhaust cleaning is a separate trade with its own requirements. Lumping the three together in one line of a proposal makes the arrangement impossible to manage.
Ask each provider to state which of the three they are quoting. The answer tells you a great deal about their experience. A provider who has worked in hospitality will make the distinction unprompted, because they have had the conversation before. One who has not will treat the kitchen as another room and price it by area, which is how most kitchen cleaning arrangements go wrong.
