Chopin was the 'Clayderman' of his time, and chicks dig it (just watch that movie). hehe...
I love that interpretation, too. Everyhing just sounds right! Some said it's Zimmerman but I doubt it-- Zimmerman's touch is very distinct and is more 'delicate' and 'refined' than this.
K likes this waltz a lot. She wanted to play it, but her teacher said she wouldn't gain much technically from this piece. Nocturne #21 may be a better choice (grade 6ish).