Bruzkus Greenberg turned a 75-square-meter Berlin penthouse into a tighter, more usable space by dropping in a blue-stained wood core that bundles the entry, storage, and banquette into one piece.
Here’s the blue box core they used to pull the whole apartment together.
Okay so I love the “one object does the boring stuff” approach here — bundling entry + storage + seating into a single core is basically the interior version of collapsing a messy signal chain. The blue stain is a bold call but it makes the core read as intentional furniture instead of random built-ins glued to the walls.