The apartment is recommendable! It takes you a 10 min walk to the subway station Panepistimio and there are some nice bakeries and a supermarked on the way, which are a great opportunity to have a quick breakfast to go!
The area around the apartment is nice, and it is close to mount Lykabettus which is really recommendable to go up to!
The only thing we didn't know is, that it's also very close to the area around Omonia which is probably not the best part of Athens to walk through at night.
Aleka is a really nice host-and conversation was very easy with her!