Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is St. Moritz (74% of total searches to Valtellina). The next most popular destinations are Livigno (12%) and Tirano (8%). Searches for hotels in Bormio (6%) are also popular.
KAYAK users have found double rooms in Valtellina for as cheap as $69 (Poschiavo) in the last 3 days. The average price is $390.