Slightly different angle on the last photo so you can see the doors.

The entryway where you board the carriage (the doors are to the left and right of this photo). You board at platform level, then walk up or down the stairs to reach the upper or lower level. There are seats at this level designated for people with disabilities. You can move between carriages. There's an information display that shows which line you're on and upcoming stations. A network map is posted on the walls near the doors.

The seats on the lower level are in the same configuration. Note the bottom of the window on the lower level just below the level of the platform.

Different view inside the upper level.

Inside the upper level. The blue padded seats are arranged in a 2 - 3 configuration. The seats also change direction (from facing forwards to facing backwards) by pushing (or pulling) on the yellow handles.