Driving from Ottawa:
Take 417 east to Quebec, it becomes autoroute 40
Once approaching Montreal, autoroute 40 becomes elevated
Take the « de la Montagne » exit
Veer towards « de la Montagne Nord »
Turn left on Ste-Antoine, get in the right lane
Turn right on de la Montagne
After steep incline, turn right on Docteur Penfield
Turn right, find parking (free parking on most of the left side of Docteur Penfield.)
Walk to McTavish (just a few blocks ahead); 3480 is just down the stairs on the right-hand side.
If you need wheelchair access, then follow the same directions until you are on de la Montagne, then:
Turn right on Sherbrooke
Turn left on McTavish, go to the front door at 3480.