modeling indoor enviroments

does anyone know a good 3d modeler for creating indoor environments for games that has materials that unity can render and edit? I am working on a game and the outdoor levels are looking very nice, but i don't know about indoor modeling that unity can render.

3D Modeler's supported by Unity

http://unity3d.com/unity/features/asset-importing

And you can make your lightmaps there, I don't know how that whole thing works, but yeah.