We stayed in this property as a group of 10 adults for a ski trip, and the chalet is exactly as described and pictured. Furnishings are clean and modern, whilst still staying true to traditional chalet design. Fittings etc are of high quality and we had no issues with anything during our stay.
There was more than enough room for all of us in terms of sleeping, dining, and living areas. 12 adults would have no real issues in terms of space and provisions. Cookware and utensils etc were all sufficient for the group size. We also easily managed to fit three medium sized cars on the driveway with a bit of sensible parking. Winter tyres and AWD are indeed required if you anticipate any snow.
Nendaz Telecabine is a ~12 minute walk; due to the steep walk uphill on the way back to the chalet, I recommend hiring ski lockers at the Telecabine, which were also very reasonably priced.
Nina & Greg were excellent with their communication throughout. Thank you for an excellent stay.