From my understanding, preference tavernLayout should be:
4 = A Tiny Mansion
6 = defeated Baron von Ratsworth
The '6' does not get set if you defeat Ratsworth, only when you visit the tavern after he has already been defeated, or by clicking on the Tiny Mansion again and getting the message "The little mansion is silent and empty, you having slain the man... er... the rat of the house."
So if you defeat him, then immediately go somewhere else, Mafia will not track this with a '6' in tavernLayout
4 = A Tiny Mansion
6 = defeated Baron von Ratsworth
The '6' does not get set if you defeat Ratsworth, only when you visit the tavern after he has already been defeated, or by clicking on the Tiny Mansion again and getting the message "The little mansion is silent and empty, you having slain the man... er... the rat of the house."
So if you defeat him, then immediately go somewhere else, Mafia will not track this with a '6' in tavernLayout