Unsanitary washrooms, unsafe food handling practices, unrelenting stomach pains, vomiting and diarrhea: these are some of the complaints being reported about popular Canadian vacations destinations in Cuba promoted and operated by Sunwing Vacations of Toronto. "It's very severe, and I am struggling a week later," said Amanda Klein of Medicine Hat, Alta., who recently returned from Cuba and says she is still experiencing stomach problems. Klein, 26, spent a week with her boyfriend and two other Canadian couples at the Memories Paraiso Azul Beach Hotel in Cayo Santa Maria, Cuba between Jan. 5 and 12. But within days of the Canadians'...