Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Bled (75% of total searches to Upper Carniola). The next most popular destinations are Kranjska Gora (13%) and Bohinjska Bistrica (8%). Searches for hotels in Kranj (4%) are also popular.
KAYAK users have found double rooms in Upper Carniola for as cheap as $59 (Kranjska Gora) in the last 3 days. The average price is $171.