Leave the dog
The most popular meeting place in Shibuya is, by far, at the Hachiko statue, the famous dog. But not only is the place crowded, but the odor of tobacco is extremely difficult to bear for a non-smoker. The best place near Hachiko is inside the green train car located in the plaza area. However, the train is actually a small public museum, and it is only open during the business day.