Wooden flooring is known for its elegant look. It creates a warm ambience inside your home. Hardwood floors are elements of d?cor themselves, which are available in many different types and colours. Its durability will ensure a good interior investment while providing aesthetics to your home.
Like Steve stated. I would add to use a rust-converting primer (the type that converts surface rust into an invert primer, stopping all future rusting).
As this is only occurring in the left corner, I'd try to determine exactly where the water is coming from (that's causing the damage). I suppose it could be condensation if the unit is over ten years old, but it also possible that a connection slightly loose or worn.