@Terra3, I think the point is to ask Airbnb to revamp the ratings system, as it isn't an adequate reflection of a stay. hosts are pushed by Airbnb to get those 5 star ratings, and "punished" if they don't, subsequently there isn't much truth in any of it, as then hosts are also afraid to post an honest review of their guests.
If the thumbs up/thumbs down seems too simplified, how about leaving sub categories like cleanliness, which is the most important one in my opinion, communication, accuracy in place, but dispense for with the "overall experience" and the "location" ratings:
"overall experience" is the one used by Airbnb in their algorithms to "judge" a host, but also most prone to being "wrong", as numerous hosts have pointed out they received 5 stars across the board, but then only 4 for overall experience.
the "location"ratings is also prone to misinterpretation: if a host has accurately described the environment for their place, why punish then with a low rating if the neighbourhood isn't in a park like settings? up to the guests to study that ahead of time. If not properly disclosed, the host would get lower ratings for accuracy. Usually, the location setting is also reflected in the price charged, so I see no need to have it listed.