The appartment (6th floor) can be reached via elevator. We had an easy self check in.
The views from the balconies, especially the sunsets, are really amazing. It is modern, nicely furnished, very clean and equipped with 2 AC.
For going out there's a bar just below the appartment along with several others on the same street, there's also a really cute café close by. Supermarket is 5min and metro 17min by foot. We like to walk so we did all the major sites by foot (20 min to National Archaeological Museum, 40 min to acropolis/agora, 50 min to panathenaic stadium).
Overall the apartment is great. The only thing we would have wished for is basic cooking ingredients (salt, oil etc) and curtains on the side of the big balcony to block out the morning light & have privacy from the neighbors in the buildings across the street. There isn't much storage opportunities for clothes, which didn't bother us on our short trip, but is perhaps important for a longer stay.
Communication with the host was great throughout our stay and we'd be happy to come again!