Awesome. A very livable and navigable city that feels much smaller than 4 million people. They have a bustling downtown and old city, along with a major park and active arts and nightlife districts. And it's definitely cleaner than any major American city I've ever been to (although Portland, OR is close). The predominate language is French, but most Montrealers are bilingual in French and English. The Metro (subway) is a definite plus.