While we didn't end up going to that actual resort, after reading your posts, we booked St Jean D'Arves in the Maurienne valley for halfterm. Just returned and it was possibly the best family holiday we have ever had.
I would never have known about the Maurienne valley, those resorts or just how reasonable a price we could get. It was fantastic value and an amazing week. We're booking for next year this month!
DH & I spent most of the week thanking Mumsnet! But thank you too.