I am very intrigued. The part that I put in bold in your original quote makes me happy I think I'll have to get around to reading this one.
There is a place, for example, where a window or mirror within the labyrinth comes into play, and in the book there is a box in the center of the page with backwards writing in it (but you don't read it that way, because it is just the inverse of the text from the other side of the paper). In other places, different colored fonts are used, or you have text running around a margin. In many places the word House alone appears in blue text.
When you explain it to someone, it sounds like a mess, but it's a pretty cool book, actually, and with some genuinely creepy moments.