You will have many different areas for kayaking, such as a part of Treviso city, then Casier in the very surrounding of Treviso, Casale sul Sile along Sile River, and then Quarto d’Altino and the roman ruins, Portegrandi & Caposile again along Sile River but in a more country surrounding and finally Jesolo and its beaches.
Remember to bring your camera with you
Remember to wear comfortable clothes and shoes, according to season
Remember to wear sunglasses and hat, specially on summer
Remember to bring with you a bottle of water
Plan your visit, test your ability and then rent a bike for you, your friends, your relatives for your stay.