“We stayed at the Kongress for one night. Overall, the staff were helpful and pleasant, but we were very surprised by an additional charge of around $450 that was only brought to our attention at checkout. We had not been made aware of this fee beforehand, which was very unexpected and brought the total cost of the room to over $750 for just one night. Unfortunately, the hotel was not very flexible regarding the additional charge, which was disappointing given that we had not been informed about……