All visitors staying in a Basel hotel are issued with the fantastic BaselCard, which lets you travel for free on local public trams and buses, as well as one free ferry ride. In addition, the card gives you a 50% discount on many attractions including an array of museums, the Basel Zoo, a 2 hour tour on the sightseeing bus and a walking tour of the Old Town.
You will receive your BaselCard when you check in to your accommodation. It should be completed in full to benefit from the free travel.
The pass means you can hop on and off transport without having to worry about using the ticket machines.