The answer to this question is a hard one.
Can you literally hide in a book? No. As of right now it's physically impossible. Not until the Prose Portal from Jasper Fforde's novel The Eyre Affair becomes a reality.
Can you take a really good book, find a place out of sight (and out of mind) and read? Yes. This is what I'm attempting to do now.
Only the downside is everyone knows my hiding spots so I keep getting found...
Let's get to work on that Prose Portal now shall we?