From what I got from level 1, you can work with almost any house plan. Marie gave examples of people that lived in very tiny spaces such as a one room apartment that made very small changes such as tilting a couch a few inches that got results. When she talked about stairwells, it was mostly about how different types of stairways would have rushing chi and the negative affects that it could have...I would recommend referring back to the the course. Good luck, and I hope that helps.
