I’ve seen better circulation schemes for low cost housing, for example thoose that apply corridors only on every second floor, and use less elevators (perhaps two for this building block would have been enough). That does lower efficiency below 90%, but it still is very efficient, requires few elevators and stairs, and thus allows for one good detail, -for example a good size window.

It’s true, the combination of white and black maybe is a little oppresive for living. We’ve to remember too that we are in Madrid, because the colour of the building and sand reminds me Lanzarote (Canary Islands).

As for the translation of excellent drawings to a built structure I feel that the metal panels should have been expressed as different from the concrete surfaces.The drawings did so, the building does not. The sheathing is pretty in paper, but expanded metal may be difficult to maintain ( a pain to paint if anything)and its uneven finish speaks of its role as something “ïnexpensive”. Paint is the least expensive of all expressive resources an architect has at his disposal, to ignore it deliberately is always a risk.

All in all, an excellent project, truly a work of distinction, well thought out and well executed. Both the architects and their sponsor should be commended….very loudly!