Obviously Klosters (and Davos) are famous for their skiing - Madrisa is know as the family mountain - it has childcare (Chf 10 per hour), nice views, a restaurant and childrens play area - ski-ing is OK for beginners and intermediates but more advanced skiiers probably want to heat to Gotschna.
If you want to ski down Selfranga when you have finished it is a couple of minutes walk to the apartment.
For professional photos of Madrisa http://www.sengers.ch/graubuenden/madrisa/madrisa.asp
For photos of Gotschna http://www.sengers.ch/graubuenden/parsenn/parsenn.asp
More photos will be posted here through the season - come back to see whats happening weather wise!