We stayed for one month. Apartment is spacious with high ceilings, super clean, great AC/heat in bedrooms, excellent Wifi in every room and a great water heater. Toilet paper, laundry detergent and lots of fresh linens/towels provided. On the third floor with a slow elevator.
Excellent location near the Larissa metro station, grocery store, the must try Green kebab restaurant and the bakery across from it, the Saturday framer's market. Exit the building right, cross Liosion Street, walk few minutes on Parasiou street and look for the orange umbrellas on the left.
The kitchen needs to be better equipped/updated. It was tricky to cook even just for the two of us. There was noise from dogs barking from the floor below us and renovations going on in the floors above us and below us. We just kept the windows closed. The living room could use a portable heater.
Vincent is a responsive host and the apartment is a great value/excellent location for exploring Athens. Would recommend it!