Diablerets is a specific ski resort for advanced and expert skiers, the altitude and temperature insures great conditions for snow and difficult for easy rides and sun bathing. The rides off slope are impressive (and dangerous).
The way up is 30 min, and the ride down at least the same time....
The village is small with a good atmosphere and all the necessary accommodations, again, it is the valley and does not receive much sun and warmth.
I personally love to ski above anything, and for this Les Diablerets is fantastic, for the rest it is basic and not the most comfortable resort.