close up play room closet behind, utility room. open it like this to make laundry closet at the back door. Enclose the water heater. use space where w/d are now at right of door as a little built in seat for bags & coat hooks over it.
Narrowboat kitchen pic from NCM carpentery. I haven't seen a lot of boat kitchens that look like house kitchens, but this one does in all the best ways. I'm not sure about the counter drain board though (seems grotty and impractical).