Hi, there are various hotels that offer childcare, one of them Hotel Alpino which is very good (morning sessions) there is a Pinochio Club - Asilo neve which is good for non skiers. There was a proper babysitting service available in the previous years, I am not sure it is still runing - basically there was a phone number you called and they would send a trained and vetted babysitter, you would pay by hour. I can get you more info if you let me know what age and rough timetable.
All the best
Jane
