For what it's worth - I bring plenty of cash (I find that it's generally widely accepted - lol) but leave it in my unit's safe. I only take out whatever I've budgeted for that day, so I never risk a major loss. It also keeps me on "on budget". On those rare occasions when I've needed more cash, I go into the bank with my ATM card and plead elderly stupid tourist (not always an act) - a bank employee is always willing to be most helpful.