The Kunsthal is an interesting and successful design, I think.
The architecture - form, materials, circulation - works with the building's function - in this case, exhibition space, auditorium, museum shop, offices etc, and a walk-through to a park beyond. I don't think Dallas' Wylie Theatre, by Koolhaas and Prince-Ramus, is nearly as happy a collaboration of form and function. But the Kunsthal works: public spaces are gracious; circulation seems to flow (except for the client-afterthought? that makes visitors double-back to check umbrellas); gallery facilities seem accommodating, with good lighting; and the building's playful attitude and materials are exactly in the spirit of contemporary art.
I enjoyed and admired the building - my new favorite Koolhaas.
Within this museum was a sprawling exhibit of work by artist Ayako Rokkaku, who takes humble materials like cardboard and adds brilliant color in a child-like, Anime-tinged style to create sophisticated images.
My favorite was probably her playhouse/sculpture built of cardboard.