There is a door in the kitchen that opens into the utility room, and a door in the utility room that leads to the wet room.
I live in a very similar house, except I have a front door on the front and off road parking, to the side of my house, for 2 cars, and a huge back and side garden.
My bathroom is twice as big as that one, with a window, and the main bedroom is much bigger as well.
Great houses - I keep the living room as the 'best' room (only use it when I have visitors/Christmas etc) and live in the back of the house.
Tardis is an apt description :)
Mine would sell for £130,000 at the moment.