I was dubious about booking this place due to the lack of reviews, but fortunately we had nothing to worry about.
The apartment was fine for what we needed as a group of four (two couples). One bedroom is a very good size and with a big bed, the other room is cosier with a regular double. The bathrooms were on the smaller side but having two of them was definitely a bonus.
There isn't much space to hang out in the apartment itself as it only has one sofa, but the outdoor space certainly makes up for it!
The area of Koukaki was perfect for us and we were never short of places to eat. It's true, there are some wonderful bakeries just around the corner, and a restaurant just over the road that was one of our favourites. There are also a couple of supermarkets close by. We researched Athens a lot before staying, and although this place doesn't have a view of the Acropolis, and is on a busy street - we would stay again.
We were in town mostly to play escape rooms (Athens has some of the best in the world), so if that's your thing - it's only a 20 minute walk to Paradox Project. Oh and yes, it's an easy enough walk to the cultural stuff too.
The building has a lift which was nice after long days of walking (and escaping).