Default search comes with instant book switched ON.
When I search for property on airbnb.com or airbnb.co.uk, I find by default airbnb only shows me only instant booking properties. This is a filter airbnb switches on by default. So I have to see all properties I have to switch off this filter. This is unfair advantage to hosts who are instant booking.
Instead it would make sense to keep default filter ON for all properties advertised by super hosts and default filter on for all properties with rating above 4.0 and also include new or unreviewed properties. Also default filter should switch off hosts hosts who are not responding to guests within in 24 hours. (responding should not be accepting/rejecting/ even if a host responded with a question to guest this should be considered quick response)
This would be the ideal default search filter. This way there is fair chance for all hosts and guest getting best expereince as well.