I think the shoes cabinets size is ok... If you want more storage you can add cabinets at the ceiling in the future. The small space next to the washing machine can put small items like steamer rack, spare wok spatula, spare salt or herbs etc Behind the shower can put a long ladder, or mops and broomstick. I think the design is not bad. Simple and useful. You can put alot of thing in bathroom like tissues 2 packs at least . Cleaning products, hair dryer . Towels .... So much thing!