A very quick "cocktail napkin" sketch of a very small medieval-inspired shop for a town center, suitable for a bakery, chocolate shop, butcher/fine meats, etc., with rented space upstairs or living quarters. Stairs use up a lot of space on these structures indeed. A shop to the right could share a wall. Pencil sketch, maybe 20 minutes of drawing and calculating. This helps to establish the reality of a small shop-type building and how different it is from modern structures. It's also a good example of how I quickly analyze a structure, determine square footage, chimney and staircase placement, heights of each floor, general proportions, main building materials, etc. From this point on I determine where I want to make changes, expand the size, how the interior framing structure will work, especially roof trusses, and more...
I would build it myself though, if I could.