Robarts is the biggest university library in Canada and also top 5 in North America! The collection of books is amazing, but what this space is really good for is mad cramming right before your exams.
The study rooms are open all night on lower floors for a good part of the academic year but they are also always packed.
The food options aren't great but the library is close to late night eateries on Spadina! As has been said previously, the cleanliness also leaves a lot to be desired as does the attitude of the sometimes very rude staff.
If you are not a U of T student, also beware that they will card you if you try to get in at unusual hours.
Overall so much could be improved in this library, but there is also a lot to be proud of. I love Robarts!