I wonder how modest the recess of the upper floor looks when it is only on one side. "Oops, looks like the money ran out." Such a thing only looks stylish if the upper floor is placed on top as a smaller cuboid, so that it recesses on all sides or at least on two sides.
You could also slide a wide garage under the upper floor to move the house further north. The ground floor then becomes smaller, but the guest room moves upstairs. With a proper staircase, a stair lift also works if necessary. The upper floor then does not have to recess because the guest room fills the space.
Something like this:
