When a friend mentioned the hardship of taking care of their elderly parents in their two level house, it was suggested to install a stair lift. I would say it is a good idea. Stair lift will make it easier for those who are incapable of going up and down the stairs. It is also a lesser expense instead of having to remodel the lower level of the house to accommodate another room or living space.
Stair lift can be installed in whatever design your stairs are. The installer or manufacturer can surely make the specifications depending on your needs. I think for household with elderly this is surely the best option to make them safe while at home. I am glad that my parents have a one story house. My Mom is wheelchair-bound and it sure would be difficult for her to go around the house if it’s two levels.