Mentioned by TripSavvy
Montreal's Best Terraces and Rooftop Patios for Wining and Dining
"In the Old Port of Montreal, on a docked ferryboat originally named the Arthur Cardin, Bota Bota is a floating spa, garden, and terrasse located right on the water of the St. Lawrence River. Montreal's only boat spa doesn't have a problem with folks dropping by for a drink and a bite without booking any spa services but there's a chance you might get turned away if you only want to drink and eat since spa patrons get priority access to the terrace. On weekends, the boat fills up fairly consistently with folks booking the water circuit or a massage."