Brought to you by Kulturprojekte Berlin, the producers of last year’s “based in Berlin” survey, Berlin Art Week is a mayoral initiative funded by the Senate Chancellery for Economics and the Senate Chancellery for Cultural Affairs, which seeks to make up for the loss of the ill-fated Art Forum Berlin by labeling the week around abc (Art Berlin Contemporary) as if some sort of extra cultural activity is actually taking place. Most of the city’s institutions are listed on the Art Week’s website, but for anyone who lives in the city, it feels rather paltry to see announcements featuring shows which opened weeks, even months ago, re-branded to sound brand new. It would seem that pretty much everything else in the city, which is being radically redesigned for the benefit of the leisure classes, is being marketed to the occasional tourist or the potential investor. But to begin rather with a nuanced comment on the city as a haven for real estate speculation, we recommend seeing how architect Arno Brandlhuber flooded the basement of his own signature building on Brunnenstrasse for the show at KOW, “Im Archipel,” which runs concurrently at n.b.k. (Neuer Berliner Kunstverein), in one of the few de …