Quote: "Start the interior and build around it, I'd say, never done interior before, but thats how I would approach it"
That would make sense, but since you said a highly detailed inn, then maybe you should make the floor, then the objects you want to be on that particular floor, and build up, then build walls around what you have done. The walls should probably be the last major thing that you model, because if you work inside the walls, then your choices would be mch more limited (I.e. you could run out of space, have to remove a wall and then redo it).
If you stand not beside me, then I assume you to be my enemy.