Thank you for this review. I've been a fan of Shirley Jackson for a long time, and this late novel is in my opinion one of her best. We lost her far too young.
In 2010 Abebooks posted an appreciative essay:
http://www.abebooks.com/books/lotter...01cta&abersp=1
I even blogged about her in 2009:
http://writersrest.com/2009/10/26/sh...haunted-house/