Tim Challies reviewed the book here, giving the book a glowing endorsement and calling it "one of 2010's must reads".
Here is the promo from the author, Lauren Hillenbrand:
My wishlist seems to be growing very quickly lately. I just received two books on singleness that I'm looking forward to reading: "Redeeming Singleness" by Barry Danylak (forward by John Piper) and "Washed and Waiting" by Wesley Hill. I'm so blessed and grateful to be able to enjoy such great reading material. Thank you, Lord for all of your mercies.