Another really simple, practical, small house design with good storage and two bedrooms - the second can be an office and guest room space. I'd move the door to the space between the kitchen bar and the living room area to minimize creation of another traffic pattern. The living room then becomes all usable space with no walk-thru needed.
this is just under 500 square feet but the layout is really efficient. shows what can be done with minimal square footage. Add a covered porch, a finished shed for an office and a storage shed -- have a pretty cool set-up