Staying at Dina's was perfect for what we were looking for and met expectations. It was clean, more roomy than we were actually planning for the price, and the location was unbeatable. We were able to take the metro straight to the stop then walk 5 minutes (or less) to the apartment. Having a washer and drying rack was a huge plus for us as we went to the beach often. Dina was also extremely responsive. We had trouble with our flight and I had to delay our check in. Dina responded in minutes and was very understanding.
For the price, it was unbeatable. The walls were thin so we could hear the neighbors pretty clearly although they never stayed up late or partied or anything - but overall this was exactly what we were looking for doing Athens on a budget!