Getaway... That's a toughie. I could think of multiple. With me its all about a nice place in a great area.
I guess, off the top of my head, I'd like a decent house in the
hills above Avalon (Catalina). I was debating about Nantucket, but after getting nailed by mosquitos on my last visit I confirmed my preference for the West Coast's own relaxation island.
Other potential getaway spots:
Capri, somewhere on the
Avanti Coast (I heard Gore Vidal's place is now up for sale

),
Beacon Hill, Boston, a really posh condo in
old town Montreal,
San Fran or
Manhattan. Ditto if its a really nice pad in the heart of
London or
Tokyo.
Old Quebec City,
Nantucket (just not in mosquito season). I find being in a really lively downtown to be as relaxing as the beach!
I disqualified the immediate LA area (well, mainland) because I want to live there permanently as opposed to a getaway.