I've only been here one time. It's hidden but best direction I can give you is to hit Polaris when on tropicana. Head north of Polaris and you'll see it to your left.
Went on a Friday night. No strict dress code, no cover charge, cool people, room to dance and away from the strip. I like chillin' on the tables upstairs. Really easy to socialize and just talk while the bottom floor is mainly where everyone is dancing the night away.
The majority of the crowd here is Latin. I told myself that the next time I come back here, my salsa dancing skills will be better. What am I saying! I can't even dance at all! Haha. Well at least I try.
Check this place out. You have nothing to lose if you don't like it. It's free!