We came as a 6 persons family and our stay was wonderful. The appartment is really really well located. Its close to the acropolis museum and its an excellent walking distance from all "central" locations. The appartment itself is really nice and comfortable. If you are coming with small kids few things to notice, from the enternace to the building to the elevator there are few steps, we have a twins stroller and we had to fold it and carry it with us. Not a big deal and didn't caused us issues but worth knowing in advance. Our host was generous and communicated quickly and clearly, no surprise he is a super host.
I definently recommend the place, especially if you are coming with young kids and prefer walking over taxis/metro.