Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Náfplio (41% of total searches to Peloponnese). The next most popular destinations are Kalamata (26%) and Costa Navarino (18%). Searches for hotels in Loutraki (15%) are also popular.
KAYAK users have found double rooms in Peloponnese for as cheap as $19 (Kalamata) in the last 3 days. The average price is $179.