I would strongly recommend to stay at Maria's place. It is very well located in the cost neighborhood of Poblanou, walking distance from restaurants, cafés, shops and grocery stores. The apartment is great, we loved all of it, it is very clean, very well organized and supplied. We loved the dishwasher and the laundry machine.
Finally, a big thank you to Maria who contacted us regarding the taxi strike which we had no idea about. Maria gave us alternatives to get to the airport and thanks to her, we were able to get a plan in place.