Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Interlaken (97% of total searches to Lake Thun). The next most popular destinations are Ringgenberg (1%) and Spiez (1%). Searches for hotels in Beatenberg (0%) are also popular.
KAYAK users have found double rooms in Lake Thun for as cheap as $159 (Thun) in the last 3 days. The average price is $568.