Considering guests do not have a visible star rating, and opinions and exchanges are buried in mountains of back and forth text - imagine a short, one line and dead ~honest~ description of a guest by a host, imagine many saying the same thing over time; for example -
1. This guest was a bear to keep happy, absolutely exhausting. (and the host is embattled in a feud over a 2-3s star review)
2. This guest acted as if constantly looking for an excuse to get a refund for 'anything'. (and the guest is wanting a refund)
3. This guest could care less to bother to read the House Rules, and yet claiming ignorance when breaking them left and right. (and ignoring the House Rules is the subject at hand).
The Airbnb review system, does have one inherent dilemma, both guests and hosts are not quite sure what the other will write, so oftentimes the host stays on 'safe' grounds and gives a diplomatic review, but not necessary a dead honest one. The guest does get the last word, another tricky part, which serves to keep the host opinion somewhat 'at bay'.
This feedback should be treated as a synopsis of the overall experience. Hopefully in one line, so it comes across to Airbnb loud and clear.
P.S. If I was Airbnb I would make this a maximum of 50 words or less.