Everything went smoothly - I arrived late at night and it took me a while to find it only because the stairs leading up to the main door (with big numbers) is not the entrance for this. Rather, it is the side entrance on the right. Once inside, everything was fine, and I only had a one-night stay before I had to go by train somewhere else. The location of the apartment is great as it is close to Megaro mousikis metro station. John was very helpful and provided as much info as I needed. Thank you for a good stay.