Yes, the best way to get cash is at ATMs, which are widely available. You might have difficulty finding them in the countryside, but you can always ask your guides for help. Most ATMs limit withdrawals to €250 per day. The best place to get cash when you arrive is at the airport ATM. Don’t worry about shopping around for the best exchange rate. Exchange rates with credit card withdraws are very competitive. Visa and Mastercard are the most widely accepted cards and be sure to contact your bank before traveling abroad so they do not place a hold on your account for suspicious activity.
Credit cards are widely accepted, but still many establishments insist on CASH ONLY, mainly in small shops in the countryside.