Stayed here the week between Xmas and New Years. The entire mountain was busy, but Le Lupin did not feel that way. Clean, calm and inviting. Staff was super, even when I slept in a bit past breakfast. They jumped to make me feel at home and make sure I had something to eat before hitting the slopes.
The location is great, but local transportation is annoying. I totally recommend driving to the North side of the mountain. I skied back to my truck twice, and the lift lines are usually short (under 5 mins compared to the North gondola that can be 30 ).
The bus to the walking Village is convenient, if the times work. Otherwise, just a brisk 15 minute walk home. Not bad late at night when everyone else is scrambling. Highly recommend.