This should have been a great experience but unfortunately was completely ruined by the hotel being next door to a nightclub. I understand it is a new business that only opened a month ago and the hotel is trying to get some changes made but it was awful. Our room was on the adjoining wall to the nightclub and the music went on until as late as 3am, making it impossible to get a decent night's sleep.
On the final night, the hotel was able to move us to a room at the other side of the hotel and it was very peaceful, although I believe the nightclub was also closed that evening.
I understand that it is out of the hotel's control and it is a new situation. However, I feel that I could have been warned before arriving so we had a choice about still keeping the room. We were tired for the majority of our trip as a result and the hotel was not willing to offer any compensation (I asked for some money off my prepaid room).
Otherwise, the hotel was nice and well located for exploring Athens. It was clean and the staff were very friendly and helpful. The breakfast was excellent and a real plus point.
The only other point to note it that the bathroom design is quite unusual and does not allow for any privacy (the toilet and shower are being frosted glass doors and there is no enclosed area for dressing) so guests may like to reconsider if this is an issue for them.