Find a hardwood installer, that can cut back some of the existing hardwood, and lace it in. They should be able to match the wood, and then the whole floor needs to be refinished. You may even have a closet where they can get the wood from. It will look good when they are done.

makes sense, thank you!

Your floor joints do not line up. You will need to remove a good section in order to lace it in. A false vent would do if, you want to keep the flooring.