For newly written code, things like readability, testability, and maintainability all can come in to whether it is "good" or not
For legacy stuff, Good code is code that works. Who cares how easy it is to read or test as long as it works?
The second one should also include "immutable". If it's hard to understand it will evolve easily to non working, and time spent on improvements can start to creep up very fast.
I have worked in very clever, solid code, but not easy to read. It was then maintained and extended by average, but competent programmers down the road, and turned into a big mess, only because it was so hard to understand.
In my experience, good code is easy to read, above all. That will make it easy to extend it coherently, find bugs and stuff. Also, if it doesn't work OK, it's easy to find out why. The single metric that saves time, money, and improves quality down the road is readability. Eveything else should be suject to that.
And, about the last point in the "article", "efficient", it's nonsense. Premature optimization is the root of all evil. You should _always_ follow the second rule of optimization (see http://c2.com/cgi/wiki?RulesOfOptimization ).