This was the second time we stayed at this hotel. The first one was a great experience, very helpful staff, nice double pillows, clean room and quite decent breakfast. This time though, we didn't sleep much due to the next room banging on the walls all night, yelling (to say the least) and having super loud music. We informed the reception, they apologised and said they would deal with the issue. Well they didn't. When we checked in we were informed that we cannot bring or order any food/beverages in the hotel and we can only order from their restaurant and they didn't even provide a menu to have a look, they just gave us a number to call. We had to order food from a place nearby and go eat it on the street. Ridiculous. Genuinely, if I knew of this new policy beforehand, I would have chosen another hotel.The breakfast was the cherry on top, disappointing to say the least, everything we ordered was stale and of the lowest quality. If you want to relax and have a good night's sleep, don't waste your money and time here. In any cheap adults-only hotel you would have the same experience as in Poseidon hotel but for WAY less money. The only positive thing about our stay was the hotel's location.