I had the opportunity to leave my luggage for 2 hours, after checking out, which was convenient. The owner is communicative.
The apartment is ok and rather small. The loft bed is very close to the ceiling, you can touch the ceiling if you lift your hand, which might be a bit distressing to claustrophobic people.
The biggest drawback is the neighborhood. Victoria Square is one of the worst places in Athens. Just outside the door there is a dozen of brothels and the street is dirty.
For the rest, the metro station is conveniently close.