Tiefencastel is centrally located in Graubunden, it is easy to get there with train, car or bus.
By train: From Zurich take the train to Chur, and from there the Rhaetische Bahn to Tiefencastel. From the station you can walk to the apartment, it takes about 10 minutes.
By car: For driving instructions please, check out the Google map on this page.
By bus: Check out the timetable of the Postbus. The bus station is walking distance from the apartment.