First of all, it's just a coffee shop. Never mind that bacon and eggs is $14 -- that's just the Bellagio where all food is expensive (see if you can find where they hide the $9 hot dogs). Cafe Bellagio is a standard Las Vegas resort coffee shop. They do the same kind of food as everywhere else, they are open 24/7, the atmosphere is casual, etc. etc. So what do you expect?
Actually, you can expect quite a great deal here. First, the approach is through the Bellagio conservatory and that's worth a visit in itself. Second, its attractive, clean, and inviting, and the service is better than average (for a coffee shop). But, even though the menu is just what you would expect, the execution in the kitchen is thoroughly competent -- they make the stuff right. So it comes out hot, tastes good, and leaves you satisfied.
This is the only coffee shop I have ever rated 4 stars. But those of you who give it 5 stars -- come on, get a life. It's only a coffee shop.