If I were more traditional though, a small flat would suit me alright, if only it was over a bookstore or a record shop, or if I were perhaps the quite lucky, over both!
I like alternative living though...I'd do fine in a yurt, or a tent, or cave, or a car, or just a blanket under the stars. 

Of course most with big houses/mansions probably have maids anyway.
But I've always believed in doing my own dirty work, and would do so, even if I did have the money for a maid. 