The same window element is highlighted here in pink to orient you. A side view first, then a front view. The camera position used for the window images you've seen is highlighted in pink left of center just below and on the center line in the bottom image.
Below the highlighted window is another partial cylinder which was used to form the window seat. That black uneven mesh on the plane line of the floor is a fractally subdivided plane used for a rug. The subdivision adds to the texture, giving it the appearance of a deep soft rug. At least, it would if you could see it rendered, but you can't yet.
Flattened, extruded cubes are also used for the wall sections and wooden trim.