The bed in my glamping lodge is fitted with a thick quilted mattress topper. On top, there is a fitted quilted mattress protector and then a cotton fitted sheet. Pillows are fitted with pillow protectors and pillow slips. The space is often let out for 2 nights at a weekend. Would you suggest it is necessary to wash the mattress protector and pillow protectors (IN ADDITION TO the sheets and pillow slips) during each change over. If the booking were for longer, or there were any marks then I would wash ALL as a matter of course. TIA Belinda