I recommend this apartment for short and long stays.
Adventages: cleanliness, well-equipped apartment- thanks to this we could travel only with hand luggage, air conditioning, netflix, close to the metro station. The owners gave us a lot of valuable advice on transport, what to visit, where to eat which allowed us to save time and get to know Athens better. Especially thank you for recommending us a trip to the Hydra island- it was the best point of our trip :)
Disadventages: The only minus was the neighborhood. Bad smell of urine, homeless people, better not to go out alone in the evening.