Very nice airport lounge.
Excellent service. Once I'd left my wallet on a chair, and boarded the plane without realizing. Imagine my surprise when a flight attendant came to my seat, delivered a message that was sent to the pilot from the ground control that my wallet was found and put on the next flight to my destination. I was SHOCKED (in a nice way) that this had been all arranged before I even realized that my wallet was missing.
Obviously I don't have a similar "lost and found" experience in another airport to compare to (thank goodness). But I am quite convinced what Air Canada lounge had done in my case is world-class customer service.