I love Las Vegas, and I love rock and roll bars, so naturally I'm a fan of the Double Down. They usually book some pretty awesome and unique bands, so you can go there almost any night and be entertained. Then there's the ass juice, hilarious. Plus, a bar with slot machines that never closes?? Be still my heart.
I wish they would improve the bathrooms at least a little. In a dive bar, all a women's room needs is a lockable door and toilet paper. I don't think that's too much to ask for.
Also, much like dive/punk bars in L.A., the place has a little bit of the too-cool-for-school vibe, which is annoying. It's awesome when everyone looks tattooed-out and fantastic, but it ruins it if they aren't nice as well.