There is another old restaurant worth going to in the Plaka called Platanos. To find it walk down Adrianou towards Monistiriki. Turn left on Mysicleos street and then take your first right which is Diogenous street. It’s in the platia. Go inside and see what they have. Everything is as good as it looks. Great place to eat at night. Be sure to sit outside unless it is cold. This taverna is popular with both Greeks and foreigners who live in Athens as well as those who come year after year. Next door is the Greek Music Museum which is my favorite museum in the city. Each display has headphones so you can hear each instrument in context and in a variety of styles. Sometimes they have concerts in the courtyard and when they do that is the background music for your meal. If you continue walking you will come to the famous Tower of the Winds, right around the corner.