I've ordered from this location many times and i its one of the busiest locations i have seen. Its filled with students and homeless people, which is why i always take my order to go. The washrooms are usually dirty, so don't bother with them. Nonetheless, some homeless people hold the door open for change, i usually get them a muffin and coffee.
In terms of the staff, the service is like any other Tim's, basically your lucky if they get it right. For instance, when i order coffee with sweetener i have to remind them twice a out the sweetener. Many times i've ordered a toasted bagel with cheddar cheese, butter, and bacon only to have received a bagel with some of the items missing.