Writer Kate Mosse likes to be up high in the house; like me she works on a laptop that has no e-mail or web access. Joshua Ferris writes with paper and pen because he thinks better that way. He doesn't ask for quiet or isolation but only lots of elbow room.
The pictures are enlightening, too. Not surprisingly, historian Eric Hobsbawm's writing room is full of stacks of paper from his research. Some rooms look more like studies or libraries, crammed with books in every corner, while others look more like offices or even guest rooms.
It seems what writers have in common most is the act of writing rather than the place.