I'd like a lot of land in the mountains (the Alps or the Appalachians; can't decide. They're very different though) but not a ridiculous amount. A descent sized villa but a few rooms that must include: a study, another room filled with books/scores/sheet music (accessible through the study only), a small recital hall (not a huge concert hall, a room with a stage big enough to fit a piano and a few players and 30 or 40 seats), along with the other amenities like bathrooms, etc.
Oh, and the house must come with a clarinet, bass clarinet, oboe, English horn, euphonium, trombone, flute, cello, viola, string bass, harp, (I'll bring my own violin) and preferably a Steinway grand (I'll settle for a baby grand).
The clarinets must be top of the line Buffet, the oboe and English Horn by Loree. The others can be of any suitable high quality make.
My study/practice room must have no books on the walls (books are in a separate library for acoustic reasons) and a window with a wonderful view.