It should be an utter of one inch quicker than the width of the carpet runner.
It does not image good and it make your stairs smaller. Most elderly prefer to live in their home to work with so long as capable. They can just and painlessly go location in the home they want as they used to be.
In this day of convenience most people are trying to skip the difficult work and do things the simplest way. The good news is you could now benefit from it when it comes to houses. Like many other things, there are ready made models available that you