The flat is one unit in a house of six in a quiet street in a quiet neighbourhood. I immediately felt at home there. The flat it beautiful and spacious. There are also several seating areas around the house, right in front of the flat, around the corner, on the first floor and on a giant roof terrace on top of the house. The only thing you need to know, the flat only has a tiny fridge and only a kitchenette, with a microwave, a kettle and a coffee maker. If you would like to cook something you can use the kitchen on the rooftop, however, that is also a bit tiny.
There are several shops and bakeries just around the corner, also several bars and restaurants. It takes you about 8 min to get to the closest metro station and from there it's two stops to Monastiraki Square. So within 15-20 min you're in the city centre.
I felt right at home and would definitely stay there again.