Left Luggage at Train Station
Downstairs is a well-signed place, with a fiendishly complex system. To use the lockers, put your stuff in an empty one, select a code on the inside of the door, put a token in, shut the door. When you want it back, use your second token to reopen the locker. Ask staff to help if you're confused (you probably will be) – or pay a little extra to use the luggage room.