This was my second stat at Aris's. The apartment is very comfortable and creative. The neighborhood is wonderful - great bar right around the corner, a couple of very hip and great cafes and patisseries and great restaurants (better and cheaper than what you find downtown). Syntagma is a 10 minutes walk and all the great museums are the same distance away (Benaki, Cycladic, Byzantine Art and War Museum). There are supermarkets around si that you can have breakfast at home. The apartment has all that you need for coffee and cooking.
Aris is great. He recommended a lot of places for us which proved to be the best we went to in Athens.
We love Athens and when we come back we will be staying at Aris for sure.