Looks good! it's centered to the main section. You can't control the skinny portion, unless you want to move your staircase over. You can add some brass for a little more glamour.

This is a once in a decade conguration for a carpenter. A tile guy is a lot more likely to get the most out of this pattern in your space. It's fairly complicated. As Bev said, because this is outside the norm you have to lay out the pattern yourself. There's really ni other choice if you want to be happy with the result.

Beautiful and beautifully balanced with all the constraints the carpenter was working with. It's a very complex math and geometry puzzle and the carpenter executed it skillfully. A smaller border would have thrown the proportions off and looked like edge filler. Managing the design to result in the hallway looking like a runner as it should and maintaining balance in front of the stairs is not easy.

It's just not what you imagined but it's really well done.

Looks very nicely done to me. Definitely not a Harry Homeowner solution!

Nice install. However, you should have been advised not to abut one floor with another dissimilar pattern.

IMO, you should have continued on with the flooring you have in the adjoining room and then added an outstanding runner in the hall for effect.

For your fix, find a lovely, large rug to cover the living room floor.

Or, separate the two floors with French doors.