Do you have a guilty pleasure book? Guilty pleasure is about pure unadulterated entertainment and escapism. Generally speaking it's not something you read to broaden your horizons or improve your vocabulary. It's a delightful diversion, so we're not talking about Dostoevsky or Tolstoy, this is more a romance (with or without vampires) or Vampires (with or without romance) kind of thing.
For me as a confirmed Star Wars geek, my guilty pleasure would be The Darth Bane trilogy.
Over to you....