The reiew process needs to be more measurable. People base the review on their own world view and often dont accuretely rate their stay. It may be own their own idea of say cleanliness and confuse a well cleaned oven which has wear and tear marks with dirt. They also have their own personal gauge of what a goos location may and even though there is maps and distances to explain location, a host may still get marked down for their location as not being convenient.