Maria is indeed a superhost: she is communicative, creative and keeps the apartment impeccably clean. I really enjoyed staying at this apartment in the heart of Athens. Gazi is not as colorful or as well kept as Plaka but it is an accessible and gentrified neighborhood with a very nice bakery at the corner (Mary's Bakery- check it out). The air is very nice (no need for the A/C) and you could just open the balcony door to let in fresh air to the bedroom. If you're interested in the terrace, I should tell you that it is worth it! You can have your morning coffee under the canopy or just lounge on the various seating arrangements Maria has so thoughtfully created for her guests. My only suggestion to Maria would be to add a traditional Greek/Turkish coffee pot to the kitchen repository-- we are in Greece after all!
P.S. There is no elevator while the apartment is located on the third floor. For those short of breath or with tons of luggage, climbing the stairs might be a bit challenging.