Memory Foam Mattress (full) (Marinwood (San Rafael))

This full mattress is only a couple of years old and was only slept on by my 110 lb daughter. She recently left for college and we 'repurposed' her room into an office so the mattress needs to go. It's memory foam, firm, and in great condition - except: after moving it noticed a little mildew on the bottom. I thoroughly cleaned it with bleach and dried it out, then cleaned it again - just to be sure. It's all good but there is a little permanent discoloration on the bottom of the foam, which you don't see because it's covered anyway. You can see in the photos. I also laundered the cover and replaced it so it's clean and ready to go. I hope someone can use this as I would hate to see it go in the landfill.