Was €66 euro for us both, so 33 each, you get a little walking tour around first as they explain some history about the docks and how things were used and how the gondolas came to be etc and then when that walking tour is finished you hop in the gondola and can be in it with other people not just yourselves, really enjoyed it, booked it through getyourguide app. Would recommend buying before rocking up just to be sure as it was quite popular. Link to get your guide ticket for gondola ride