The ambiance of this place is a 4 or a 5- it's very nice-looking and the staff is nice. Wendy was our waitress.
However, I would give the the food and coffee a 2.5. We came here for breakfast - we ordered coffee, a breakfast burrito and eggs Benedict. When I added milk to my coffee, it curdled up and floated in chunks to the top. Gross. I told the waitress and she got me a new coffee and milk. The new one had one small curdle but I drank it anyway because I am a coffee fiend and was coffee-deprived. The coffee was also very weak...you could see right through it (see my picture). We didn't want to complain and wait again so we just drank it. The second refill was better. The cups were tiny though (I'd say 4 ounces) and they cost $4 each with free refills. We only got two cups each and were not offered additional refills before getting the check. We saw other people walking out with to-go cups so we asked for the same. I kind of expected the coffee to be taken off the bill (since the milk was spoiled) but it wasn't.
My breakfast burrito tasted good but it was 80% potatoes, which I would not expect at a price of $15. The eggs benedict was okay also.
If you are a coffee enthusiast staying at SLS Vegas, I'd definitely recommend Perq, their coffee was delicious.