I stayed one night in late March 2017 in this tastefully decorated loft full of amenities. The Wi-Fi is fast(er than hotels), the heating system uses radiant heat from the floors to keep temperatures cozy, there is plenty of hot water (unlike hotels), there is ample lighting on dimmer switches to get the perfect ambiance, and there are plenty of electrical outlets conveniently placed around the loft. The bed is firm and comfortable; the bedding provided is pretty decent. The sliding glass doors to the wrap-around balcony open up very wide to let in a lot of light and air. There are a lot of huge windows on every side, which lets in a lot of natural light (but you have to remember to shut most of them when you undress)!
The unit is up two or three flights of stairs up a spiral staircase, or you can use the elevator. The building is directly in front of a school yard, so you will get noise and stares from that direction during the school day. The building is situated in a residential area very close to the food/nightlife scene of Gazi and the Kerameikos metro station (like, 3 short blocks away). Personally, I got a little scared walking the streets alone at night because of how quiet and dimly lit they are, but I eventually felt very safe in the neighborhood. It is in such a great location very close to the sights and scenes of Athens.
Stamatis met me on arrival and provided a very warm and informative welcome tour. He has a very helpful guide on the kitchen table with a lot of important information, such as the Wi-Fi name and password, local restaurant suggestions, which restaurants also deliver, a local map with nearby grocery stores and bakeries circled, and which sights and scenes are worth visiting. And, he was very easy to reach and responsive when I had questions after he left. Super host!