beautiful cabinet color and mudroom design. You could consider adding a little bench that connects from mudroom side around wall leading to den. Would give some added storage under and another place for them to sit and get ready.
I might put this built-in in my master bath without the counter top and with built-in storage cabinets above. In a laundry room hampers in a vanity for sorting dry cleaning and laundry. I'm liking that! Also love the big counter.