I think you're talking about the Ess-Bahn. The only problem waiting for someone there is that seems to be choice for smokers to light-up. The airport has gotten too crowded in the main entry area, that it's not easy to find someone there. However, there is a back area behind the wall that has the arrivals and departures board mounted on it. It's where the police office and tax refund office are located. There are seats to sit down on in that area, which might be helpful.