If I forget to take my hotel clothes, is it clean?

It is clean to stay in the hotel with your clothes, because you can call the front desk and ask the hotel to keep them for you. After all, clothes are not big objects and won't take up too much space. The hotel will promise to keep them. But once you find that your clothes have been left behind, you should call the hotel immediately, otherwise the cleaning aunt will think that your clothes are unwanted and throw them into the trash can.