In his article From Design Philosophy (Part 1: What is “Good Design”?), the author defines “Good Design” as follows:
Good design is when the thing in question accomplishes what is desired in an efficient, reliable, intuitive, thorough, positive, and inspiring way without contradicting its own goals, being dishonest or misleading, or being unnecessarily obtrusive or overwrought.
Personally, I think that definition might be over-designed. I would simplify it by ending it early. Continue reading Good Design and Frames of Reference