Here's a link to the article
(scroll down to the bottom of the page in the link and check out the technical drawings)
It includes a spacious lobby that joins the three, old buildings, reading and exhibition areas, a coffee place, a gallery, and an auditorium. I think it relates to Jounieh because of its historic context.
The way Piano uses the grid and the cube to create a harmonious connection is very interesting. Plus, his generous spaces in a small area are nice. Incorporating greenery also shows sensitivity.