Review concerning the roof garden café on 10th floor. After getting 2 simple coffees and a dessert for a quite steep price of 15,30€ (which is not justified by the ambience of food court or the service - it's a self-service café) we returned, as we ought to do, our tray with empty plate and cups along with the receipt. No-one informed us that the receipt is required in order to enter the restroom. When we reached there, two ladies told us we're not allowed to use it, because it's reserved for customers only and wouldn't even listen to us. Mind you, another customer found their behaviour so unreasonable and mean (his word, not mine) that passed his own receipt to my husband. That caused a horrendous reaction from the two ladies who started protesting that this was not allowed. We thanked the gentleman, selected however not to enter their precious toilets to avoid causing a scene. This was a bad experience. And it was crowned by a terrible stomachache that dessert gave me for a good 7 hours after consuming it. That café feels like a tourist trap. And please don't say "oh, such places are there in every tourist destination" (I wouldn't go so far as to characterise Athens as a European capital). For example, when one decides to have a café in Galeries Lafayette in Paris, they can enjoy the haussmannian architecture, super kind service and quality products in better prices. And they're allowed to visit the restroom, of course!