Guests should not be dinged for this kind of thing, we want guests to have a happy experience with Airbnb throughout so they stay with the platform. I have in the past suggested (remember Host Voice, anyone?) that if Airbnb wants to increase the guest review percentage, the way to do it is with a carrot. As in for example: ''Review your stay for a chance to win a $1000 accommodation package''. Would be peanuts to Airbnb, could be an annual draw, cheap at the price. Would create great goodwill and more reviews.
This becomes a better idea the more I think about it, so am tagging the forum team as well in case they think it has any merit.
@Lizzie, @Stephanie , @Quincy