The rooms are modern and spacious and the hotel staff is super friendly and helpful. They helped us to get to the close by attractions and arranged us an airport taxi in the middle of the night upon departure. Loved the balcony in the room, but unfortunately it faced the main road, and we were on the 1st floor, so it was super noisy as there's traffic nearly 24/7. The rooms did not suffer from the noise though, and there are balconies that face the smaller road too, and I reckon those are much more quieter.
Housekeeping was done on a daily basis, but the housekeeping staff left twice our other balcony door open and also changed the towels despite we hung them (and that was supposed to mean that we can still use them), so the eco-friendliness wasn't really true in that sense.
Breakfast was very good and there were multiple options. Biggest disappointment was the pool area which was under construction. The pool was one of the main reasons I booked this hotel since we were traveling in April and knew the sea water would be cold, but wanted to sun bathe, so the pool was a great option for that.... but because of the construction there was no pool, and sadly there was no information about this at Hotels.com while booking.
All in all though a good hotel close to the Glyfada center, shopping, restaurants and beach too.