ATMs widespread. Cash is king; credit cards are not widely used.
Hotels Room cleaners €1 to €2 per day, porters the same per bag.
Restaurants For good service 5% to 10%.
Bars/Pubs 5% to 10% for table service, rounded to the nearest euro, no tip for self-service.
Taxis 10%, always rounding to a full euro.
Toilet attendants €0.50.
It's considered rude to leave the tip on the table. Instead, tell the server the total amount you want to pay. If you don't want change back, say 'Stimmt so' (that's fine).