Tina's place is in a central and easily accessible part of town. Easy to find with her directions, and an easy metro ride from the airport. The area has some nice shops nearby, I'd like to highlight the bakery that you can see from the window, their ham and cheese croissants are tasty, and so are their spinach pies.
A few cafés just around the corner are full of life and looks popular with the local crowd.
The flat itself is very clean, neat, stylish, and bright. As we were there in February it wasn't quite the season for sitting on the balcony, but in the summer I imagine that place to be a great place to relax after a day in the city.
When I'm going to Athens next, I will check if Tina's place is available, it's definitely a place worth staying in again. Thanks Tina!