My experience at Hotel Minoa was excellent. The staff were the absolute highlight - always friendly, welcoming, and knowledgeable. They provided me with information on where to go in Athens, and the best way to make a day trip out to Cape Sounion using the public bus (I would very much recommend this). The room itself was neat and clean, with very fast WIFI, good air-con, a fridge, and a TV. There was a small cafe attached to the hotel that did excellent coffee and spinach pastries. The local area had a lot of good restaurants, some grocery stores, a market (on certain days of the week) and the hotel itself was a 2 minute walk from Metaxourgheio metro station (although it was only a 25 minute walk into the centre). As a solo female traveller I felt very safe in this hotel, however it is quite near Omonia Square, which I would not recommend walking in at night alone, as it can be dangerous.
I spent a week at Hotel Minoa, and had a fantastic time. It was the perfect base from which to explore Athens on a budget. I cannot praise the staff highly enough for how comfortable they made my stay - if you stay here you will be very well looked after!