When you want to go on a romantic trip, you can choose anything you like. But you can choose boat, it will be very interesting. But you must be careful, because your partner can fall down from a boat! and he/she will be angry with you... You can choose also a yacht. It will be more exciting, than in a boat. You can buy an excursion on interesting places. And it will be better to have it on night, because some sounds are better to hear in night. All kinds of romantic traveling are interesting.