Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Franz Josef Glacier (49% of total searches to West Coast). The next most popular destinations are Hokitika (19%) and Greymouth (17%). Searches for hotels in Fox Glacier (15%) are also popular.
KAYAK users have found double rooms in West Coast for as cheap as $49 (Franz Josef Glacier) in the last 3 days. The average price is $177.