Dreams or visions about a log cabin tell you about a project, the reflection of your true self, the heart, your own self, your mind and soul and your character traits, the different rooms are therefore the aspects of your mental state, your soul and your personality.
Another explanation is that the log cabin reflects your past, your present and your future. In addition, the log cabin often reflects the purest form of yourself, your heart, the primal man. You can think of the mountains and valleys of life, the hard work (labour) you do. Yet another explanation is that can indicate simplicity, loneliness and back to basics - flowing from desire.
It represents your heart and how you are in the situation you are in - how you feel, what you experience and how you profile yourself. You are, as it were, your log cabin (house), you mirror everything on your log cabin, so if this is negative on a (un)conscious level, you also experience this negatively, if it is positive, the dream or vision also feels different.