Tipping is always appreciated but never required, though many restaurants in central Rome will expect outrageous tips from American travelers. As a rule of thumb, if you were very happy with the service at a restaurant, leave a couple of euros per person; at a pizzeria one euro per person is acceptable. No tipping is necessary at cafés with table service, though it is a Roman custom to leave 10 cents per coffee when it is taken standing at the bar. There is no need to tip taxi drivers, but hotel porters expect one to two euros per piece of luggage.