Since I heard about this hotel via Rick Steves, I wanted to let women know to stay clear. The pervert night clerk sexually harassed my 25 year old daughter in the elevator. It was scary and very creepy. Stay away from this hotel despite its "economy" and central Athens location.
You should be reporting this to the hotel management since it is person-specific and it involves one of their staff. This is such a complicated allegation (and requires a level of detail that is not really appropriate for a third party who are not part of a jury to adjudicate) that I am not sure how useful it is to an audience whose demographic also happens to be over 50 years. I understand your anger/ frustration, but you should channel it to the hotel. They will not know there is a problem that needs to be corrected unless you let them know (assuming you have not done so).
Please post again once you receive the hotel's response. How they handle such issues is a good proxy for their integrity and character.