Oh, The Drop. Since this is pretty much the only lounge/bar with in the GVR, we ended up here pretty much every night/morning of our trip.
Small, but conveniently laid out with plenty of couch seating. It's located in the center of GVR casino area, so it was hard to miss :-)
Good service, good cocktails, nothing spectacular, but still a decent spot to entertain your coworkers and clients. The music comes in a form of very random videos, so from Bon Jovi to Pitbull, there is something for everyone.