Istanbul airport 7 hour layover

Hi,

My fiancé and I are stopping in Istanbul on our way to Nairobi. We have a seven hour layover and our bags are checked through to Nairobi. Does anyone recommend a restaurant that we could take a cab to so we could have dinner in Istanbul? We are open to all types of cuisine and price points, just as long as the food is good and it is not a 4 hour dinner.

Thanks in advance for your help,

Adam