I liked the way the structural elements were 'partially' articulated for visual expression (exterior), and the way it relates to the existing Paul Rudolph's building (visually and physically) - solid brick masses with thin lines.
Interior: The staircase felt as it's part of the gallery space (had intimacy with the gallery space) - it may be because it is located in the middle of a building and surrounded by gallery space, each step are low making you move slowly, there are openings to gallery space. I liked the way the staircase was differentiated from the gallery space by the use of wood panels. I liked the metal 'cap' of the railing.
The interior space is complex.
The two projecting windows were visually very interesting on the exterior.