Toilette please!
This is a small although important tip…if you really have to go to the bathroom and it can’t wait until you find a McDonalds or public restroom, just pick the most crowded cafe or bar you can find, walk in confidently and go straight to the back, where the WC usually is. Be quick and get out of there so you don’t have to buy anything. Oh, and avoid eye contact with the waiters, they get really angry when you use their bathroom without buying something. Just a thought!