We spend 4 days in this location. It was very cold outside, but we managed to heat the apartment. Great view, very central location - good for pedestrians but good as well to reach by car, safe, nice welcome from Bobby.
As the other inhabitants of the house doesn't seem to heat much, it was not easy to get the location really warm, which might be the same in most of the apartments in Athens during the short cold period. But as we spend all day outside, this wasn't a big issue for us. I can recommend this location and would go there again.