The appartment is great. Its fantastically located, in a neighborhood full of bars, restaurants and shops. It is also very near to syntagma square and public transportion, although we didnt even use it because you can easily walk almost everywhere. It can get loud at night, because the street is very alive and there are a lot of bars and restaurants, so i recommend bringing some earplugs if you have light sleep (like me). But thats a tiny detail, because the appartment is really beautiful and comfortable, and the host is really nice and helpful.
I highly recommend this appartment and i would stay here again.