Baby proofing while maintaining a grown up sense of style can be a challenge. Focus on creating spaces that are welcoming and safe to the baby so that you aren't walking around saying "no" every other minute. One of our tricks is bins, baskets, and cubes. They can hide under cabinets and book shelves and can easily be taken out for playtime. I love Serena and Lily's Pandan Bins. They're stylish, come in great colors, and they actually hold a lot! Poufs are having a moment with singles and families alike, and can double as a coffee table/foot stool - check out these from CB2. And baby gates have come a long way -- some are down right sleek and stylish like these.
Check out some of these other resources on baby proofing and decorating.