Marina is an amazing designer (the apartment is gorgeous) and a thoughtful host.
There were a couple of technical issues in the first couple of days but Marina was prompt in fixing them.
The bed is super comfortable and the WiFi is super fast which was exactly what I needed.
Despite being near the railway tracks there is hardly any noise because the windows are double glazing and effectively block the noise.
There are also no trains from midnight to 05:30 am and the veranda overlooks the courtyard which is one of the quietest courtyards I experienced in Athens (despite the many apartments in it).
The immediate neighbors on both sides are also very quiet (one apartment has an elderly lady and the other apartment became vacant as they moved out of it two weeks into my stay).
However, as the building was built in 1968 and because the socio-economic status of the neighborhood is not the most desirable most neighbors still use the original wooden doors from the 1960's (not the best Greek invention because some people slam them) which is why it may not be ideal for those who seek tranquility but it is perfect for those who are used to urban living and appreciate comfort and boutique spaces.