I've been wanting to go to a STK restaurant for quite a while and finally had the chance. This restaurant blends the nightclub atmosphere with a fancy steakhouse and does it well. It is not very large, so if coming on a weekend, you need a reservation but if you happen to be in town during the week you shouldn't have an issue finding a table.
The prices here are what you'd expect at a fancy steakhouse and will run you about $100 a person on the average.
I had the bone-in rib eye and it was cooked a perfect medium and melted in your mouth. It was one of the better cooked steaks I've had in a long time and tasted delicious.
I chose the Cauliflower Gratin which was just OK. It just didn't have much flavor. I feel maybe some salt would have helped, or perhaps using salted butter instead would have given it enough of an oomph it so desperately needed.
We also had the Mac & Cheese at the table as a recommendation by the server and while it was creamy (I always like my mac creamy), it still didn't wow anyone. Both our sides fell flat on all 3 of us at the table and we agreed we should have either had no sides or picked others. We didn't even bother boxing the left overs to go. This is where this place loses a star for me.
Service was great! Everyone was on their toes refilling waters and delivering food on time and in order.
Would I come back here? Not sure. With the amount of amazing steakhouses in Las Vegas, it is a very tough decision on where to go each visit. If I stayed at Cosmo again, I'd definitely consider it.