The Zeta restaurant at The Address Downtown has decent food, which is a mix of Japanese and random fusion, a nice decor and if you sit on the patio, great views of the amazing fountain display that takes place every half hour at the base of the esthetically magnificent and architecturally impressive Burj Khalifa. It blows the Bellagio fountains out of the water (corny pun intended.)
I’d recommend grabbing an evening drink, snack or even dinner here.