It hurts me to give Bentley's this rating. It used to be my go to bar. It's clean, friendly, has very good drink prices and it had a neighborhood atmosphere. Even their newish beer garden is very nice.
Unfortunately a couple years ago they introduced the various events. Pretty much every weeknight and every night on weekends there's a band, karaoke or some sort of horrible obnoxious event (you're exempted from that criticism, Irish Music Night). That means what used to be the ideal place to hang out and have a beer with friends is gone---replaced by a new crowd with very loud events and bands. As a venue for bands, it's absolutely terrible, IMHO. I understand why they've done it, they seem to get much better business now, but I really hate it and stopped going there at the end of my time in C-U.
So go on Irish music night or a night with no bands and this is a great bar, albeit with a shittier new clientele. But go on any other night and it's a bad music venue you can't even really talk in.