Public restrooms are a rare commodity in Rome, and when found, they are often undesirable. Although there are public toilets in Piazza San Pietro, Piazza di Spagna, on the Palatine Hill, and in a few other strategic locations (often with a token service charge €0.50–€0.70), consider making well-timed pit stops at local snack bars. Standards of cleanliness and comfort vary greatly. Restaurants, hotels, department stores like La Rinascente and Coin, and McDonald's tend to have the cleanest restrooms. It's a good idea to carry a packet of tissues with you. There are bathrooms in all museums, airports, train stations, and in some subway stations. In major train stations you'll also find well-kept pay toilets for €1. Carry a selection of coins, as some turnstiles do not give change. There are also facilities at highway rest stops and gas stations: a small tip to the cleaning person is always appreciated.