Super creepy and hard to "enjoy" given the subject matter. However, I really appreciated reading from a child's perspective (I was reminded a bit of The Curious Incident of the Dog in the Night-Time and Extremely Loud and Incredibly Close). Jack has spent his first five years of life living in small room with his mother. He knows this world very well and is accustomed to a limited repretoire of activities that develop his creativity, literacy, articulation, and muscles. With his mother as his sole companion, he personifies the objects in Room. As the story progresses and Jack's world expands, he faces new stimuli and situations that challenge his conception of reality. That was all fascinating. But creepy. 
 Oh, I picked this up for a dollar in Tokyo, but only read it this month to fulfill a BB Challenge of A Book by an Irish Author. I'm curious now about Donoghue's newer book Frog Music.