Yeah, I do. Its pretty nice.Edit:If you've been carving, Dont. Carving brushes is very easy, and gives you results very fast. But if you can, DO IT YOURSELF. Hammer has the tendency to create hundreds of brushes extra when carving anything that isn't a simply box, and all those extra brushes won't do your map any good.
You should add an env_light, the exterior looks a lot less interesting without it.