We stayed for 5 nights at Stefania’s place. It was definitely worth it. The location is amazing, 5 min away from the Attiki station by foot, and 10 min away from the Larissis Station (where trains to Thessaloniki and Piraeus depart from). The place was really clean and we were provided a lot of towels, toilet paper, toothpaste, shampoo...
Also the mini market next to the appartment is hugely recommended for its good prices and the hospitality of the owners.
The beds are really comfortable and it’s definitely an incredibly cheap place to stay, taking into account that it’s in such a good area and Stefania, the host, is really nice and always there for you in case you have any questions about Athens or you need any help. I will come back for sure!