Yup, I am a fan of the Hop in Brew! I've been going on and off since moving to Calgary years ago and I miss it when I let too much time go by. It's the perfect small pub for meeting up with friends when you are in a mellow but chatty mood. As has been mentioned about the music - it's good but not overwhelmingly loud.
My only complaint would be the hours - perhaps this is because I work within walking distance and would love to go with work pals for lunch! But alas, it only opens early evening-ish...
But hey, I don't want to knock it because there is a great vibe, great beer, & some of the best nachos I've had in Calgary, it's a classic in my books!