This in a very interesting topic. Some may say that interior design from 1970s Europe is bad, as Maxwell does at the top of the page. Yet Hariman, one of the commentators on this thread says its fine. The perception of design and art is interesting. We have the "bad is good" concept, and "kitsch" and "retro". So is it just down to personal taste? What is bad? If it's bad, why is it bad? An interior design comprising leopard-print sofas and chairs, black mirrored walls, chandeliers and pink frilly lampshades would create a certain mood. I guess if the design you choose creates the mood you want, then it's fine. I can recommend Domane as an excellent firm of interior designers who are very good at creating interiors to conjure up whatever mood you need to create.
http://www.domane.net