Week days consisted of French lessons in the day, often company visits in the afternoon and then cultural activities on the evening. The course is intense but well and organised and you've got plenty of free time to explore Montreal (which you'll fall in love with)
The HEC teachers and the group leaders which look after you on trips are all absolutely lovely and I became friends with many of them and we still keep in touch now.
My French progressed immensely whilst I was there, I'd studied french for 2 years prior to the summer school but whatever level you are there's classes to accommodate it.
I would highly recommend the course to anyone interested in being in a cool city, having fun, making friends for life and learning some french while your at it!
Highlight: being on Canadian TV!