The conservative administration is an ever-present source of distress for students.
The size of the University makes it difficult to get to know your professors. They will not come to you. You have to put in the effort.
BU, like any large university, has an impenetrable bureaucracy that becomes annoyingly problematic for individual students with individual issues.
The security on campus is reminiscent of your seventh grade bus driver if she were to suddenly develop a thick Boston accent. Don't swipe your card more than once in the wrong direction, or you are liable to get shut out.
The blatant apathy of much of the student body
Everything is overpriced, from the housing, to the coffee, to the nightlife.
No smoking on campus . . . anywhere
We start earlier, end later, and have the least vacation time of all of the universities in the area. Also, spring break is usually one or two weeks later than the majority of colleges in the US.
Boston closes down at 2 a.m., with lingering party-goers until about 4 a.m. After that, you have to find your own party space.
Freshman classes at BU. Most of the quality professors never teach them, and they are usually filled beyond the maximum and held in a large auditorium.