Stayed here for four nights. It’s a cheap room in a good location probably fine for an overnight stay but I can’t in good faith recommend this for more than one night. Gluco is friendly and welcoming but the apartment is lacking.
The bathroom wasn’t that clean, the kitchen was always full of dirty dishes and the cats are allowed all over the kitchen surfaces. There was also an occasional smell of cat pee all over the apartment. None of the doors close properly or have locks, and the bedroom doors (the host’s and ours) can swing open in the night meaning it’s quite hard to feel you have your own private space.
If you’re looking to stay in Piraeus for a couple of nights I think there are probably better options out there.