I had to walk around the buildings for a few minutes before discovering that there is a little tiny sign that says "Pines Pub" over a door on the east side.
To get there by public transit, take the C-Train to Rundle station and take a #48 bus. The #48 bus runs every half hour and stops right there. If you are willing to walk from 52nd Street, you have more choice of buses, but it's about a 12-minute walk, so it depends on how you feel about walking. I like walking.
It's right on Rundlehorn Drive, so I imagine that if you are driving, you'd take the Trans-Canada or Memorial Drive to 52nd Street East, get on Rundlehorn Drive and then just drive East till you get there. It's West of 61st Street Northeast. The Community Centre has a parking lot.