Hotel prices in Killarney and Kenmare are among the most expensive in the country according to the trivago.ie hotel price index. The largest year-on-year increases in Ireland were in Dublin and Killarney, where costs rose 21 per cent to €168 and €156 respectively in the 12 months to July. hotel room beds 3 In Kenmare, hotel pries increased 19 per cent from €124 in July 2014 to €146 this month. Average hotel prices are up 3 per cent compared to the previous month, while in Ireland year on year prices have risen by 15% according to the data. This compares to a European average of 13 per cent.