Thanks everyone. I'm glad you like this idea.

I agree with the brick issue, but I can't change the orientation of the texture ( the problem is even worse with wood textures ). I could make a second set of tiles that face the other way and use them on the vertical walls, but then I would have to blend the corners by hand and the whole point is to be able to make these maps fast. From an artistic point you are right, but I doubt the players will care.

I wasn't planning on adding room numbers but it would be easy enough to do, what do other people think?