I think old fishbone flooring (or herringbone) is the most beautiful flooring a place can have. Combined with the leather butterfly chair and a String desk corner, this apartment combines many of my favorite things.
Personally, I think copper pipes are gorgeous just the way they are. But if you do want to add a little something to make them stand out even more, Robbert van Strien designed these cute little copper leaves.
Painting an old radiator ( & or pipes ) bright color makes it a piece of art. After painting the whole exposed ceiling in the basement one solid light color . Painting some of the pipes funky colors is going to be GREAT!