Food is standard McD food, quality and freshness. No surprise here. Free WiFi is nice. The storefront and washroom are clean though not sparkling so.
However, I love the genius location: corner of 2 of the busiest streets in Markham, plus it is on the way to both Hwy 404 and Hwy 407. Whatever rent the owner is paying, it is worth it. Drive through is fast in the morning, so don't let the long line up scares you. The servers at the drive through windows are efficient and polite. I am not sure how the meals and coffee become ready as soon as my car arrives at the 2nd window.
3 stars in general, but the efficient service at drive through during morning rush hours pushes the rating to 3.5 stars.