The hotel is not clean, is it useful to complain?

hello, because I work in a hotel, I know better. The management system of each hotel is different, and the handling of complaints is different. In our hotel, if you complain directly or the head waiter complains, they will usually give you another room and criticize the waiter who made it for you afterwards or change it for you. However, we all have foreman who specializes in hygiene inspection, and this situation is relatively rare. In addition, we can write a complaint letter to hotel leaders, but this is also handled afterwards, depending on whether the leaders attach importance to it. However, ordinary seven-day and home-like, these also depend on the management of the store manager. In a four-star hotel, complaints and customer feedback are more important.