Martha had great communication with us before and during the trip. The apartment is just as described/pictured, clean, and in a nice neighborhood with coffee shops and restaurants and bakeries just a few minutes away! We walked to the Acropolis so we could see things along the way, but the streetcar/tram and metro are easily accessible as well. We went to several different neighborhoods (including popular Gazi) easily from Martha's place. You also have late-night options. We got in from the ferry at midnight and there was a small convenience store around the corner that was still open where we could get water and snacks.
One thing to keep in mind -- sometimes the front lobby door is locked from the inside very late at night, so you will need your keys to get out. This normally won't be a problem if you're just out late on the town -- but if you have an early morning flight and are leaving the keys in Martha's apartment for her don't forget to unlock the front door first!
Thanks, Martha! We had a great time!