The apartment was really worth it - it felt like home. Very simple but with everything you need. Very nice, lots of light, big balcony and very wel communicated within the wonderful Athens. Walking to the centre was also a nice option.
Really, I don´t think my long stay (six weeks) in the city would have been so good without the "second home" I found in Tianchun´s apartment. And she... was always there with nice advice (the big open-air market in the neighbourhood is amazing) and always contactable if you needed anything or had any doubt.
Try the experience!