I really love Lisa Kleypas's historical romances. One reason is you get a feeling of living in the 19th century from them. Another are her great characters like the wonderful Hathaway family. Every member has their distinct voice and the romance they find is suited to each of them specifically. 
 In this book especially I loved the feeling of family and how they all help each other. I do come from a tight-knit family myself, so it's a lovely thing to see portrayed so vividly in a book. 
 Poppy and Harry were great but I'm really looking forward to Cat and Leo, the glimpses we got of them so far were hilarious.