It will be very cold and you can get dumps at any time during your stay. How much are you looking to spend on lodging? Four Seasons is a good choice but you may also consider renting a house or condo near the resort. How serious of a skiier are you? That is, if it's a powder day, do you want to hit the first tram in the morning or will you be sticking to the more moderate parts of the mountain? Stay at the resort if you will be there first thing in the morning - town is a good 20 min away. There is a shuttle that runs regularly to the ski resort (I haven't taken it in years).