While I am sorry that you didn't enjoy the appartment I want to adress a couple of key points. The piano that you mention is personal property. As such I think that we can reserve the right to forbid it's usage. Please also note that a lot of places around the globe hotels, bars restaurants, have a piano at display. At the vast majority of times those instruments are not allowed to be played with by visitors. I find it rather unfortunate to complain about that. The piano is not listed as a working feature. The piano is only an embellishment. A nice piece of furniture to give a nice touch to the house. It could be a statue or a plant. The value is exactly the same.
The piano, or the washing machine for that matter IS NOT LISTED in the amenities list. You can check that anytime.
As far as noise goes, we had no complains so far, as you can see in the other reviews. I cannot stress this much : all our guests SO FAR have not complaint for any noise. We will look into that, but I also think that this is NOT something that we are responsible. You also picked a suburb in athens that is on the lively side of things, so I think it all comes down to what YOU choose. Maybe next time you come in Athens you can choose another suburb?
About the bedroom temperature, we will look into that as well, and we thank you for the heads up. The A/C unit installed however when turned on should have sufficed and cooled the whole apartment. However once again we are going to verify and see if a second unit needs to be installed asap.