Location: On the main. Street parking is available but metered. Depending on where you're coming from (and if you like to walk), you can either get off at St. Laurent and walk up (or take the 55) or you get off at Mont-Royal and walk over.
The place: The space isn't too big, but it's bright and the clothing is well laid-out. Meaning that you can actually walk around without knocking anything over. I'm not a fan of the changing rooms because they've got curtains instead of doors and the curtains don't actually close all the way.
The goods: General 54 carries women's clothing made by local designers, such as Jennifer Glasgow and Olena Zylak. If you're looking for something that's unique (i.e. not generic like what you'll find at GAP), and well-made then this is a great place to shop. I picked up a dress that I love by Jennifer Glasgow and stop in every once in a while to see if anything peaks my interest.
Service: Friendly but not intrusive.
Price point: It's going to depend if you happen to pop by when they have a sale going on, but I'd say dresses average $120 and up.