The apartment is very convenient, quiet and is in a very safe area. Major sights are within 10-15 min walk. There are lots of good restaurants nearby. Konstantinos' team was super responsive, and was very kind to let us leave our luggage at the apartment as we arrived Athens in the morning, and then came back in the afternoon to check in when the apartment was cleaned. Do note that the elevator is locked in the early morning, thus if you check out very early like us (at 5:30am), you will have to carry the luggage down 4 floors by stairs. Most people check out at normal hours in any case, so this should not be an issue. We were very happy with our stay; would highly recommend Konstantinos' apartment.