Ahhh that's better. This is Fokionos Negri. It used to be a large avenue but they chased out the cars and made it into a park bordered on both sides by cafes and restaurants.
It is about 10 degrees cooler than downtown Athens too. To find it we turned right off Patission on Ag Melitiou and then a quick left to Fokionos Negri.
You can read about it on my Kypseli Pages