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lived in Maine for a good part of my life, thankfully didn't live that far north.
been to that area a few times and the good thing about it is that it puts you in good proximity to a lot of lakes/national parks/mountains/trails if you're into that kind of thing. some of that stuff can get super tourist-y, but a lot of people move up there specifically for the isolation and nature. Bangor/Old Town is the oasis in that isolation. Old Town is where UMaine is so it's a pretty typical college town, bars are decent.
Check out Portland if you get the time, it's a great city and I miss living there quite a bit, lots of good food beer and cool places. it's about 2 hours from Bangor so you'd have have to make a day trip out of it, but it's definitely worth visiting.