The question is... What type of food are you seeking ?? Full meal ? Something Quirky ?
One I can tell you that I would not even consider is Revolucion De Cuba ! Noisy inattentive and bloody expensive!
Ballyhackamore has some rather nice and some quirky places and you can buy a Metro day ticket which will allow you all over the main city area, all day for a £5 each
Metro (Pink or "Cerise" buses ) and Gliders (Articulated Purple buses)
So
the trick is if you go onto Google maps and search what you want and then when you zoom in look for a bus symbol
and click on it! Number one it tells you the name of the nearest Stop / Halt and number two it tells you when buses are due there
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So the Pin is Ballyhackamore outbound and all those buses stop there if requested
Anyway that bit is immaterial If you want assistance to get anywhere message me and I will send you my number !
(I used to work for Translink the public transport company and now am a technician for their ticketing devices But know my way around their systems

)
Villa Italia is a nice spot up by Queens University as is Maggie Mays
Whatever you fancy we can find it for you and get you there and back easily
Also behind the Europa Hotel was the Old Great Victoria street Bus and rail centre (which has now been moved 100 m and became Grand central station) But there is a pretty diverse set up of Food where the old stands were
Boojum does some really nice Mexican Burrito Bar
Tortilla Belfast does some most excellent Mexican !!
Ah Yes!! The Morning star Pub if you want to experience Lovely fresh cooked food and the atmosphere of an older Pub That is the one I favour
Anyway I am full on drooling here
Perhaps we can meet up and say Hi for 5 mins if I am about the City ?