You know the kind we're talking about. They open the door, dressed comfortably but stylishly, with a warm, welcoming smile, no perspiration in sight. The home's clean and fresh, but not so immaculate you don't feel like you can't get comfortable. You leave later that evening feeling revived, renewed and energized by the experience. Want to be that kind of host yourself? There are four things you can do that will add to giving off the appearance of being an effortless and gracious host next time you entertain (though unfortunately, it will take a bit of effort to appear effortless looking).