It can be hard for an architect to leave well enough alone. This was clear when listening to Winka Dubbeldam describe the gut job she did on her already-renovated conversion of a 1928 former warehouse overlooking the East River and Brooklyn Bridge Park. One thing she did was replace the floors with 12-inch-wide Russian White oak plank with a hardwax oil blue-gray tint from Siberian Wood. Her sofa is from Arflex, while the gold side table, carpet, chairs, and low unit in the middle of the carpet are all from Moroso. The painting is by the German artist Wolfgang Isle. “I always dreamed of having a fireplace,” says Dubbeldam, so she installed a ventless one from HearthCabinet.