One of the best libraries I have been in thus far. Five floors of educational texts, resources, technology, and study rooms.
They also have a Coffee Bean & Tea Leaf on the first floor to the right of entering. There are areas that may accommodate just about anyone. Whether it be comfy chairs and coffee tables, super quiet areas, study group rooms or tables, individual desks, computers, printers (which you have to pay for printing at an inexpensive price), tutoring areas, and shelves stocked with every kind of book/journal/encyclopedia you could imagine.
Most desks are equipped with or near multiple outlets and have a desk light as well. You can also find white boards in the study room or out in the main floor areas to do all your doodling on. And there are restrooms on every floor. ;)
I prefer this library because it's on campus, convenient (when it isn't study or finals week), and it's huge! The interior is always maintained and clean. Its just the elevator takes a while when Lied Library is busy, and it could get as busy as taking half an hour to find a study room or open spot. However, it's worth the hunt!