We have an overnight at the Frankfurt, flying in the afternoon and leaving early next morning. We have considered staying at the Sheraton as it is located at the airport. Marriott has usually been our choice though we are only silver. Should we stay at the CourtYard, Frankfurt? We have stayed ,though years ago, at the Frankfurt Marriott, but the cab ride what with the euro exchange is probably more that we want to spend. Any suggestions? Could we stay at the Courtyard and go into the city for the evening? Thanks