In Usurper v.12 and lower, When attacking someone in the inn, during the fight with the guards, quick heal and the guards will disappear. Also, when you fight someone in the inn, it doesn't use up a player fight.
In Usurper v.13b, when getting a room in the inn, take 20000 dollars. Get a room on the third floor. You can hire 4 gorilla or 4 $5000 guards. The room ends up free!