I paid upon reservation but when tried to check out, they told me that I did not pay. To solve this, I had to come back from Messe to the hotel again and totally wasted my time. Anyway it was their fault that they did not take money from the third travel agency between us, but they just kept asking me to prove from my side. They did not take any action from their side to help solve the situation. It was my second time to stay here but really disappointed.