How much should I tip?
For restaurants and bars, 10-15% is standard. Be aware there is a national consumer tax of 15%, known as I.V.A., added to food and most other purchases—it is generally included in most prices. Any extra or exceptional service welcomes your gratuities.
Hotel maids, although often providing "invisible" services during your stay, can and should be tipped for good service. Tip: $2 per day in a moderate hotel, $3 to $5 per day in a deluxe hotel (Tipping daily rather than when you check out ensures that the tip will go to the specific person who cleaned your room).