Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Gangtok (88% of total searches to Sikkim). The next most popular destinations are Lachung (4%) and Mangan (4%). Searches for hotels in Namchi (4%) are also popular.
KAYAK users have found double rooms in Sikkim for as cheap as £6 (Gangtok) in the last 3 days. The average price is £45.