Growing up, I used the word "den" to describe my family's hangout room with a TV and a fireplace, and "living room" to describe our parlor-like room, which was used rarely, and when it was, for cocktail parties. It always seemed insensible to me to have a room you never use, and I vouched to make the most of my space when I had the option. This owner of this North London living room seems to really get it. With its George Sherlock-style sofas and leather wingback chair, the seating looks supremely comfortable — ideal as an everyday hangout. But, the space is polished and fit for entertaining thanks to glamorous accessories like a gilded, Federal-style mirror, a demur double sconce, a tailored, mercury glass floor lamp, and a turned wood console table used as a bar with elegant glass decanters. To get the look of this room, read more.