YES. YES. YES.
I love everything about Holstein's. Their food is SO GOOD - get the Asian pork belly - OMG. The milkshakes look amazing but I haven't tried them yet as I'm usually hitting up Marquee later that night and need to save some room for liquor.
Ambiance is great. The decor is hilarious and cool at the same time - like butcher shop meets harajuku lovers? And they have a great DJ that plays after 10 (love that they're open super late!)
I will continue to come here every time I'm in Vegas, and you probably should too.