I was brought up in this neighborhood. It is a residential area that is very safe with everything that you might need within walking distance(supermarkets, bakeries, coffee shops, fruit markets, traditional Greek restaurants, pharmacies, commercial shops, banks, etc).
While it is central, it is very quiet and safe. The main advantage is that you will need about 15 minutes to get anywhere in the historical centre while you are just 500 metres away from National Road and intercity bus station of Liossion. Through metro network you can go easily from the one side of the city to the other in order to see every corner and aspect of Athens.