3 days stay in Dusseldorf for business purposes in the new Holiday Inn Express in the Rail Station Area. Convenient and central location, nice hotel, very crowded during the weekend, good facilities, good breakfast. I got disappointed from the service as the last day of my stay - Sunday - and even the hotel was almost empty my room wasn't cleaned. I left the room twice and asked the reception to be cleaned and still at 17.00 o'clock it wasn't cleaned. It is unacceptable to clean the rooms that have no guests for the next day and the guests that are staying here not to have service for their room and not even clean towels. I reported the problem 2x in Sunday and 1x in check out and the only response was that they were very sorry. Not the best way to treat clients and especially IHG Gold Member for years. Overall nice experience but this with the missing service was not ok.