Nice. Boarded tour boat an easy 5 minute walk from the cruise ship. Was only offered on cruise ship in German & Italian (we are English speaking) and went anyway. Tour boat had multi-lingual headphone sound system.
Long drive to Berlin with boring countryside. Stopped for break about 1/2 way. Berlin was crowded, under construction but a must-see. Very rushed due to traffic on a Saturday. Stopped for several short photo sessions, brief lunch on own (snack bar style) then rushed back. Would have loved an authentic lunch or dinner.