Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Patras (43% of total searches to Achaia). The next most popular destinations are Nafpaktos (40%) and Selianitika (10%). Searches for hotels in Olympia (7%) are also popular.
KAYAK users have found double rooms in Achaia for as cheap as $59 (Patras) in the last 3 days. The average price is $160.