Unfortunately it is a public library (though part of a private university) so you will have lots of randoms in there at all times (undergrads from Nova, Broward college, FAU, and the general public). I know this because I used this library as an undergrad and it was usually pretty crowded. It usually closes at 11pm which kind of sucks. My current school's library (FIU) is open until 1am, though other colleges/programs on the campus with their own library (such as law) are usually open all night. Check and see if other colleges/programs on the NSU campus have longer hours, that would be your best bet. I know the HPD library is usually open until midnight, double check though. Good luck here, you will love it. I gave up my seat here for another school - I've been in south Florida too long and could not do another 4 years.