I visited the all-you can eat buffet Cuban adjacent to the restaurant. I believe it doubles as a lounge after hour. (The stage, dj booth and large speaker are a dead give away.)
The location is kind of out of the way. Their sister restaurant (Havana Grill) is much more convenient. The restaurant is located in the Howard Johnson Motel in the sketchy stretch of Las Vegas Boulevard that no one ever talks about (north of the Stratosphere). I only went because I had a Groupon.
The Good: the arroz con pollo and tres leches cakes (chocolate and traditional) are very good. The staff was friendly.
The Bad: pretty much everything else. Be careful when grabbing the serving spoons, some were hot enough to burn and some were cold just like the food in the trey. So a lot of the meat was dry from sitting at too hot of a temperature or was cold because it was not held at proper temp.
I doubt I'll be back even if there were another Groupon, unless I have an insatiable urge for tres leches cake.