By train
Many long-distance trains go directly to Altona station – from there it's only 500 m on foot (about 5 minutes). If your train only stops at the central station, take the S31 four stops further (about 11 minutes). The DB ticket is valid to Altona.
Tip: For your stay, consider HVV's 9-Uhr day pass or 9-Uhr group pass.