Upvote:1
While this is 100% opinion based, here's my 2 cents:
Yes, there are plenty of things to do, enough for a week at least. You can visit museums including MAC, Pointe-à -calière, science center, etc. You can hang out downtown or simply walk around. Usually, there will be some event or festival going on as well. Search online a bit and you will find something.
If you're into hiking, plan a trip to Mt-St-Hilaire on the south shore.