Comfort Suites on Davie Road is less than 2 miles from the NSU campus. They also have a free shuttle to/from the airport and the campus which will save you any cab fare.
It's a little cheaper than the Hyatt (even though the Hyatt is nicer).
~$90 a night - ask for the student discount.
lately, I've been taking chances with naming my own price on priceline. It's kind of a gamble, I know, but I haven't been disappointed yet! For the NOVA interview, I put in a bid for $65 a night and got the newly remodeled Holiday Inn and Suites on University Drive in Sunrise (about 5 minutes away from NSU). No shuttle or free breakfast.... but I planned on renting a car anyway and just bought a bite to eat in the morning. Cheap stay and a little adventure with the element of surprise!