There is no solution for this, and AirBnb deliberately removed this feature. I have been in touch with their customer service, when they still mentioned property type filter on their help pages, but already removed it, the customer service is very bad, basically it does not exist, they reply through "community member", after a while a real support replied to me that they are going to report this "error" but can't promice the time when it will be fixed.
They not only removed property type but any sorting at all, so I have to browse through 300+ listings when I only want to rent houses, not apartments, etc.
The trick described above does not work.
That is disgusting and simply discrespect for customers, AirBnb owners behave like an authority, that knows what is better for their users. I am using HomeAway instead now when I can.