If you love books, If you want to travel in books history on all continents this is THE PLACE for you. It is a little museum, but a diamond one. I enjoyed books and stories from England, India, China, Japan, Iran, etc. Second floor is a short but really lovely tour through religions/faiths history. My advice is to saveur this house and take your time.
Impressive it is also a modern museum: a lot of multimedia interactive places. Enjoy!