The sound of people vomiting at 3 a.m., neighbours who open their windows to scream “I love you, Montreal!” at all hours of the night and a frat house atmosphere taking over the building. This is how Manon Wascher describes the “Airbnb nightmare” she has gone through since the apartment complex she lives in on Guy St. was sold four years ago. Wascher says there are between 30 and 50 of the building’s 230 units being rented on the popular travel website.