Some storage is already included for the kitchen as well.
Here you can see the mini fridge and freezer under the counter along with more cabinetry and the sink.
While the sink and faucet are quite small, they should be plenty big enough for most tasks. My own tiny house sink is not much bigger than this. While it can sometimes be a challenge dealing with really large cookware, on the whole it works just fine in a tiny space.
There is a kind of clothesline system here it appears. I’m not sure if this is meant to function as closet space or something else.