The US urban planner in me has no real feelings about Maple Leaf Gardens, and instead thinks "cool adaptive reuse in an urban space." The Canadian die-hard Leafs fan in my husband, is heartbroken that this monumental space now houses a grocery store, yet is someone relieved that they didn't tear the whole thing down.
The layout is intuitive - prepared foods on one side; grocery items on another. We weren't there to shop, just browse, though it seemed like they had a large selection. There's a ton of cheese, a deli-prepared foods area, sushi area, patisserie, bakery - you can easily eat a large lunch here. Upstairs is the Joe Fresh and LCBO as well as a giant maple leaf crafted out of old seats from Maple Leaf Gardens.
We TTC'd it (get off at College station then walk about a block east) but the underground parking is free for up to 90 minutes with validation.