This is how the room would look after you're done placing the tiles. This is how the room looks before you put all the tiles into the proper place. The drawback to this method is less flexibility. Using 3x3 tiles, I can create some pretty big rooms with lots of interesting features. That's not to say that you can't combine the two methods though. The BIG tiles would by 9 squares by 9 squares and have a variety of room configurations. Then you would use room connectors both internal wall types and external wall types to connect the big tiles together.
