Parma is an amazing place. However, it is WAY off the Strip which is probably why it is so good. My wife had the Bollognese. The pasta was homemade and incredible. I had the Tuscan Ribeye. It was cooked perfectly(medium rare) and I had plenty left over for lunch the next day.
The atmosphere is very casual. You can sit at a table or there are couches with coffee tables you can enjoy your dinner at as well. The wine list is VERY reasonable. We had the Tobin James "Notorious" Cabernet. It was wonderful and what I expect out of a Paso Robles Cabernet.
So, if you are in Vegas and want to eat off the Strip, go to Parma! You get great food and service without Strip prices.