I'm going to play devil's advocate a bit & say that I actually think the star system is mostly fair... or, if not exactly fair, at least the fairness quotient balances out in the end. For example, my neighborhood is just outside the tourist area, and right where I am isn't very pretty. So, I get points off for it not being pretty and not being in the hub of everything. The plus sides to not being in the middle of everything is that it's quiet, and that there's parking, and parking is free. But, still, for tourists, they'd rather be one block from the Liberty Bell rather than fifteen. That's fine with me, and I think it's fair.
I think the star ratings are, by their very nature, subjective. One guest might absolutely love my acommodations, while another will not. That's what reviews are - a subjective assessment based on an individual opinion. When we read restaurant reviews, we might read several to see what the consensus is.