The couple rented a chalet in the mountains about half a mile from the town of Klosters. During their stay McCartney worked on musical ideas for The Beatles' next album.
I can remember more about writing Revolver than about recording it. I was in Switzerland on my first skiing holiday. I'd done a bit of skiing in Help! and quite liked it, so I went back and ended up in a little bathroom in a Swiss chalet writing For No One. I remember the descending bass-line trick that it's based on, and I remember the character in the song - the girl putting on her make-up.
The couple returned to England on 20 March 1966, after which McCartney moved into his house at 7 Cavendish Avenue, London.