We loved this! We got the combo night and evening hop on hop off. We did the evening tour first, it's an hour and a half unguided, but it was great for getting us acclimated to the city. Nina was on board to answer any questions. She was friendly and knowledgable. We did the day tour the next day and loved it; it is a two hour guided tour in French and English. The bus broke down but we had a new one within 5 minutes. The tour guide, forgot his name, was excellent and had a great sense of humor. I would recommend taking the whole tour before deciding what you want to see. Montreal is beautiful at night. Sit on top of the double decker for great pictures opportunities.