Effie's place is in a quiet, suburban area. The furnishings and feel of the apartment is vintage, furnished as if your grandparents lived there. The kitchen is stocked with an eclectic mix of crockery and basic utensils. I wasn't keen on the bathroom as it was run down and I don't like hand held showers (but I was fully aware it wasn't wall mountable) but it was serviceable, with good water pressure. The place was warm with central heating (only for a set time) or reverse cycle air conditioning. The double bed was firm but ok and the area quiet at night. It is a 5 minute walk from Sepolia station and that is also where you'll find the supermarkets and a few eateries. The centre of town is a 50 minute walk and not much to see on the way, so metro would be best.
Effie makes every effort to keep in contact and responds quickly to questions. She lives in the floor below so is easily reachable. Wifi can be a bit slow but ok. This is the kind of place to stay for a feel of suburban Athens, with plenty of room and quiet.