Finding an inexpensive accommodation in St Moritz is a hard task, especially during the winter and more popular months, where the prices of accommodations go through the roof. However, it's not an impossible task, click here.
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Link hotel or expedia There are also dozens of hotels scattered through Dorf and Bad, virtually all of which are closed in the April and November between-seasons.
There are also a good quality hostels.
The campsite Olympiaschanze, which is about 1km southwest of Bad (081/833 40 90; June-Sept) can be affordable.