Mercure Frankfurt Airport 4*. . The Mercure Airport Frankfurt Hotel is situated in Kelsterbach, 1.9 miles (3 km) from Frankfurt Airport, and is easy to get to by bus or the S8 train. The stops are not far from the hotel, or alternatively, there is a free shuttle service to and from thea irport. It is around 20 minutes to Frankfurt city center with the zoo, the Palmengarten Gardens, which are well worth a visit, and the Zeil shopping street. You are also about 15 minutes from the Commerzbank Arena and the exhibition center.