I love to decorate the desk in the bedroom suite of the Lucky 38 with a meeting people magazine (My character is a speech oriented character), Bennys Suit and Maria on the chest at the foot of my bed, a teddy bear on the bed, Putting the golden boxing gloves and the Boxing Monthly book on the top of the bedroom bookshelf, and I put the dog treat I found (it was in my inventory and I STILL havent figured out where it came from XD) next to the bed, after all, a cyber dog is a mans best friend.
And to make the Cocktail Lounge feel less empty, I like to set up little scenes in the room. You'd be surprised how a little work makes the cocktail lounge feel alive XD