A guest forms a view of your hotel before they reach the room. Smudged lift doors, a scuffed corridor or a dusty planter in the lobby all suggest the rooms might not be much better. Reviews pick up on it quickly.
Hotels and serviced apartments never really close, which makes cleaning harder to manage. The morning team finds what the night shift left behind. Standards drift between weekdays and weekends. Function rooms get turned around in a hurry, and back-of-house areas are left until someone complains.
What you need is one consistent standard across every shift and every floor. That means a clear scope, a team that knows the building, and a simple way for your managers to see what was done without walking every level.