Hi Ojin,
I actually went to Northeastern for undergraduate school and now am attending Bentley part-time for my MBA.
I LOVEEEED Northeastern. I loved the campus, the location in Boston, and the school itself. I feel that I got a great education and also had a great opportunity to enjoy Boston as well. The co-op program is absolutely great, in my opinion. I was a finance major as well, and as I'm sure you know, there are many different types of finance jobs. The co-op program helped me figure out what type of finance I want to do and what I definately didn't want to do after graduation. Northeastern doesn't "Guarantee" you a job after you graduate. But if you do well enough at one of your co-ops, they may offer you a full-time position upon graduation. Even if a co-op doesn't turn into a full-time job, you build a great resume with applicable job experience that most college graduates don't have upon graduation.
Bentley is also a GREAT school. I would think that most people would say this is the "better" business school because it's focus is mainly on business. It has a Trading Room which is great for finance students if stocks/bonds/etc are of interest to you. Here I'm sure they can help line up summer internships as well if that interests you.
Northeastern is right in the heart of Boston, down the street from the Prudential building, Fenway Park, and is on the Green Line (subway). Bentley is out in Waltham and they have a shuttle that brings you to Harvard Square in Cambridge, which you can then take the subway into Boston. Both campuses are beautiful. It just depends whether you are looking for a school more in the city or more in the outskirts. Personally, if I could do it all over again, I would still choose Northeastern because I loved being right in the city and able to get anywhere in Boston easily.
If you have any specific questions or I can help you out any more...please let me know!

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