It opens with the soothing sound of waves lapping at the edges of the Canale di San Marco and seagulls swooping along the Grand Canal. Then the reality of daily life in Venice is rudely revealed in The Venice Syndrome: hundreds of tourists crowded into Piazza San Marco and the main drag along the canal. But only during the day. By night, most of them have long gone, having "done" Venice, and the city is left near deserted until the next day's onslaught.
The impact of mass tourism - 21 million a year - in Venice, is alarming. This thoughtful documentary about the predicament plaguing the city and its long-suffering, dwindling population is both fascinating and bleak.
It's a complex situation. Twenty years ago, 200,000 people lived in Venice; today just 58,000. Young people leave to find jobs, for those who remain, rents and real estate prices are pushed up by foreigners or mainland speculators buying properties. Many elderly residents fear they will have to leave too, one way or another.
Visitors used to stay for a week or two; now they are known as "take-away tourists" - they arrive by the bus-load (one scene shows dozens of buses parked in the Piazzale Roma, a daily norm) and walk around for a few hours "not conscious of what they are experiencing". They ignore the local businesses, such as the little cafes and bars that need their money so much. It's so bloody sad.
Even worse, much worse, are the enormous cruise liners that come into Venice's fragile waters. It's a shock to see these monsters manoeuvring into dock, dwarfing the buildings, churning up the lagoon, disturbing the residents.