The film starts in Paris, at the Le Nemours café under the Palais-Royal arcades, where Elise reads and burns Alexander's note. She leaves from the Gare de Lyon and arrives at Santa Lucia station, with the Grand Canal right in front of the steps. Le Nemours is also a place of The Intouchables.
In Venice, the Hotel Danieli by St Mark's is the hotel of the suite, but the boat arrival at its door was filmed at Palazzo Pisani Moretta, a private palace you see from vaporetto line 1. Frank's escape over the roofs in his pyjamas ends at the Rialto market, open only in the morning and closed on Sunday, and the police station is the front of the Marciana Library on the Piazzetta.
For the ball, Elise arrives by boat at the white arcades of the Fondaco dei Turchi, today the Natural History Museum, while the dance was filmed inside the Scuola Grande della Misericordia in Cannaregio, open only for events. In Venice everything is on foot or by vaporetto, and two days are enough. Robert Langdon's Venice is in Inferno.